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Following a resounding, sweeping electoral triumph for Democratic candidates in the 2026 U.S. midterm elections, the party now holds enhanced legislative leverage to push back against core planks of President Donald Trump’s second-term agenda, with the widely derided, financially draining military campaign against Iran emerging as one of their highest immediate policy priorities. While Trump retains executive authority to veto any formal congressional legislation designed to terminate the conflict, Democratic leaders hold a formidable procedural tool embedded in the U.S. Constitution that could force a policy shift: the power to block federal funding earmarked for continued military operations in Iran.

This path, however, carries significant political risks. Historical precedent shows that wielding the power of the purse to defund an active overseas war can spark a partisan firestorm that backfires against the party leading the charge, eroding public support rather than galvanizing it. Even if Democrats succeed in winding down hostilities, analysts warn that the deep, lasting harm the Iran campaign has inflicted on Washington’s global diplomatic standing may prove irreversible.

Democratic leadership has mapped out three distinct strategic pathways to push for a full withdrawal from Iran, though two of these options face steep structural limitations. The most straightforward approach is to pass binding legislative text mandating an end to the war. Earlier this year, in June, Congress moved under the 1973 War Powers Resolution to pass a bipartisan concurrent resolution directing Trump to either withdraw all U.S. forces engaged in hostilities against Iran or secure explicit congressional authorization to continue the campaign. That measure, which drew cross-party Republican support, was immediately dismissed as non-binding by the Trump administration, which ignored its directives entirely. A follow-up version of the resolution later failed to advance in the Senate that September.

For a war termination measure to carry the full force of federal law, it would need to clear both chambers of Congress before landing on Trump’s desk, where a presidential veto is all but guaranteed. Overriding that veto would require a two-thirds supermajority vote in both the House of Representatives and the Senate, a threshold that would demand dozens of Republican lawmakers break publicly with their party’s sitting president, a high bar few political observers consider easily attainable.

A second, slower Democratic strategy centers on congressional oversight powers, including launching sweeping, high-profile investigations into the execution, cost, and strategic justification of the Iran war. This process would likely feature public hearings, official subpoenas for internal administration documents, and even potential impeachment proceedings against senior Trump administration officials. Hakeem Jeffries, the widely presumed incoming Speaker of the House, could target Secretary of Defense Pete Hegseth for impeachment to appease the progressive anti-war wing of the Democratic caucus and hardline Trump critics. But at this stage, the legal grounds for such impeachment proceedings remain untested and ambiguous, and even with a new Democratic Senate majority, securing the two-thirds vote required to remove a cabinet official would still need significant Republican backing. More critically, the drawn-out, months-long timeline of congressional oversight probes makes this approach ill-suited to deliver a rapid end to active combat operations.

The most viable, immediate lever available to Democratic lawmakers to halt the Iran war is the constitutional “power of the purse” enshrined in Article I, Section 9, which explicitly states that no federal funds may be drawn from the U.S. Treasury except via formal congressional appropriations. Once the new Democratic-controlled Congress is sworn in this coming January, every new dollar the Trump administration’s Department of War requests for the Iran campaign will require explicit sign-off from both the House and Senate. Democrats could attach a targeted rider to the annual national defense budget that explicitly prohibits the use of allocated funds for any further hostilities against Iran. Trump could veto that entire defense appropriations bill in response, but such a move would freeze pay and operational funding for every active-duty U.S. service member nationwide, a political move that would carry enormous electoral risk for both parties.

This exact scenario played out in 2007, when a Democratic-led Congress attempted to insert a withdrawal timetable for U.S. forces in Iraq into a defense spending bill, only for then-President George W. Bush to issue a full veto. The fight devolved into a bitter partisan blame game, with both sides accusing the other of abandoning U.S. troops in the field. Facing mounting voter backlash, congressional Democrats ultimately backed down rather than being framed as undermining military personnel. That identical political peril hangs over the party today: Democratic leaders must weigh whether they are willing to stake their electoral credibility on a funding fight that Trump’s allies would almost certainly frame as a betrayal of deployed U.S. service members, leaving the question of which side will blink first in the high-stakes standoff unanswered.

In the aftermath of the midterm rout, Trump himself acknowledged last week that public frustration over the Iran war was a key contributing factor to the Republican Party’s devastating losses, though he doubled down on his decision to launch the campaign, claiming he would repeat the exact same actions if necessary to prevent Tehran from developing a nuclear weapons capability. Vice President JD Vance took a far more critical stance, posting a blunt statement to social media platform X that explicitly identified the Iran war as the core reason for the GOP’s midterm collapse, adding that any honest post-election reckoning within the Republican Party had to start with acknowledging that fact. Vance, who has a long public record of criticizing unconstrained U.S. military intervention in overseas conflicts, had previously publicly aligned himself with Trump’s Iran policy since taking office, but the scale of the Republican electoral defeat has now cleared a path for him and other disillusioned GOP lawmakers to break ranks with the president on the war.

For Trump, agreeing to a negotiated end to the conflict now would represent a major public humiliation. To date, the U.S. has poured nearly $50 billion into the Iran military campaign with almost no measurable, tangible strategic gains to show for the massive investment. Tehran has demonstrated that it can effectively exert control over the critical Strait of Hormuz global energy chokepoint, while Iran-aligned Houthi forces in Yemen have sustained repeated attacks on commercial shipping in the Bab al-Mandeb Strait, disrupting global supply chains. These cascading costs will linger long after the end of Trump’s presidency, with many geopolitical analysts arguing that the botched Iran campaign could deliver a fatal blow to the unipolar global order the United States built in the aftermath of the Cold War, with the largest long-term strategic beneficiary of the chaos likely not Tehran, but Beijing.

Fresh off a midterm election victory that flipped at least seven previously Republican-held Senate seats, House Democratic leader Hakeem Jeffries laid out his caucus’s core governing priority in no uncertain terms during an appearance on MSNBC’s Morning Joe: “We ran on affordability, we won on affordability, and now it’s our job to govern on affordability.” The historic electoral upset, far exceeding most pre-election forecasters’ projections, was driven not by a sweeping ideological blue wave, but by widespread voter frustration over skyrocketing daily living costs that have left 79% of Americans dissatisfied with the country’s direction, even as top-line macroeconomic indicators paint a deceptively healthy national economic picture. Across the country, small business owners from disparate backgrounds are echoing that affordability anxiety. Near Austin, Texas, Kim Hanks, operator of Tillies, a multi-site hospitality enterprise with 300 employees, notes that relentless spikes in grocery and fuel costs have forced her to repeatedly raise staff wages, describing operating budgets as “such a moving target for us on affordability.” Halfway across the country in Elkhart, Indiana, Danny Reynolds, who runs a longstanding family bridal and clothing store, says his only demand from Washington is basic stability and cross-party collaboration. Even deep in traditionally Republican rural Texas, the cost-of-living crunch has eroded GOP support. Outgoing Texas Republican Agriculture Commissioner Sid Miller told local reporters that local ranchers are now earning $300 to $500 less per head of cattle while grappling with record-high fertilizer expenses, leaving many in the deeply conservative agricultural base feeling “betrayed.” To deliver on voter demands, the new Democratic congressional majority has laid out an ambitious multi-pronged policy agenda branded “Fighting for an Affordable America.” Top of the list is restoring the enhanced Affordable Care Act health insurance subsidies that were rolled back, alongside reversing Medicaid cuts signed by President Donald Trump in 2025. The caucus also aims to eliminate the administration’s sweeping import tariffs, which they argue add thousands of dollars annually to household costs for groceries, fertilizer, and construction materials, and move to end ongoing US military engagement in Iran, a conflict they directly link to the current $4.18 per gallon national average gasoline price, a nearly 40% increase from pre-conflict levels. Additional priorities include a 10-year national initiative to build 4 million new affordable housing units, raising tax rates on billionaires, and expanding child tax credits for working families. Yet the path to passing any of these policies is fraught with structural barriers. As prominent investor and Fisher Investments founder Ken Fisher bluntly observes, the divided government dynamic means “Congress can’t get anything past a presidential veto. President Trump can’t get anything he wants.” Overriding a presidential veto requires a two-thirds supermajority in both the House and Senate, a threshold Democrats cannot reach on their own, leaving the country facing a likely two-year stretch of legislative and regulatory stagnation that will disappoint millions of voters who cast their ballots explicitly against political deadlock. Many of the Democrats’ core policy priorities face steep uphill battles. President Trump has repeatedly framed his tariff regime as a cornerstone of his economic agenda, and Oxford Economics Deputy Chief US Economist Bernard Yaros projects average import tariff rates will hold steady at around 10% for the remainder of his term. Complicating efforts to roll back the tariffs is their surging contribution to federal revenue: the levies generated just over 1% of total federal revenue in 2024, but now make up more than 5% of government income, a fiscal anchor that makes full tariff dismantlement extremely difficult for any future administration. Limited bipartisan compromise remains a narrow possibility, however. President Trump told CNBC that he believes his administration can collaborate with congressional Democrats on “many more things than people understand.” Yaros points to a potential high-stakes trade-off, where Democrats agree to extend the GOP’s existing tax cuts in exchange for the restoration of health insurance subsidies, though he does not expect such a deal to materialize until late 2027, with tangible economic benefits for households not arriving until 2028. Beyond formal legislation, Democrats are exploring alternative pathways to advance their affordability agenda. Henrietta Treyz, an analyst at policy consultancy Veda Partners, notes that Democratic leadership plans to launch rigorous oversight hearings targeting corporations that passed 100% of tariff-related cost increases directly onto consumers, particularly in the wake of a February Supreme Court ruling that allows congressional scrutiny of whether firms used tariff rebates to lower consumer prices. Oregon Democrat Ron Wyden, incoming chair of the powerful Senate Finance Committee, has summed up this oversight strategy in six words: “affordability for us, accountability for them,” vowing to use his committee’s subpoena power to reassert congressional authority over trade policy and call insurers, pharmaceutical manufacturers, and large financial institutions to testify about their pricing practices. At the state and local level, newly elected Democratic governors in traditionally red states including Texas, Ohio, and Georgia hold direct regulatory authority over two major household cost drivers: electricity rates, which have spiked amid surging data center energy demand, and local zoning rules that currently restrict new housing construction. Even with all these strategies in place, many critical cost-of-living factors remain entirely outside of Democratic lawmakers’ control. Gasoline, diesel, and fertilizer prices are inextricably tied to the trajectory of the Iran conflict, and Oxford Economics analysts warn that now that the election has concluded, the Trump administration may be far more willing to escalate military action in the region, as high fuel prices no longer pose a major electoral risk. That dynamic creates a politically precarious position for Democrats: if global energy prices fall, they will struggle to claim credit for the relief, but if prices rise further, they will almost certainly share the blame from frustrated voters. The first immediate test of the new congress’s ability to avoid dysfunction comes on December 11, when current federal government funding expires, with analysts warning the risk of a full government shutdown is significantly elevated. Having won the national argument that affordability is the nation’s top priority, Democrats now face the unenviable task of delivering tangible cost relief to voters, even with levers of power stacked against their agenda.