In a high-profile federal corruption trial that wrapped up Friday, a jury found ex-U.S. Representative David Rivera of Florida guilty on multiple felony counts, including conspiracy and failure to register as a foreign agent, for his role in a covert lobbying campaign on behalf of the Venezuelan government. The conviction marks a major conclusion to a six-week proceeding that drew testimony from high-profile political figures and laid bare a secret influence campaign worth tens of millions of dollars. Prosecutors laid out that the former lawmaker’s consulting firm secured a $50 million contract from PDVSA, Venezuela’s state-owned oil giant, to lobby sitting U.S. officials to soften Washington’s stance on Caracas during a period of extreme bilateral tension. The work was carried out in 2017 and 2018, when the Trump administration first imposed harsh economic sanctions on the Maduro regime, and was funneled through PDVSA’s U.S. subsidiary Citgo, according to court documents. Joining Rivera in conviction was his long-time associate Esther Nuhfer, a veteran political consultant who partnered with him on the scheme. Federal prosecutors from the Southern District of Florida argued that the pair intentionally hid the true source of their funding and the ultimate backer of their lobbying: Nicolás Maduro’s Venezuelan government. “As long as the money kept coming in, they didn’t care from where,” lead prosecutor Roger Cruz told jurors during closing arguments. The trial featured unexpected testimony from sitting U.S. Secretary of State Marco Rubio, a long-time friend and former housemate of Rivera’s, who was one of the targets of the lobbying effort. Rubio repeatedly stated he had no knowledge of Rivera’s work for the Venezuelan-linked firm, a claim confirmed by Texas Congressman Pete Sessions, who also testified during the proceedings. Neither Rubio nor Sessions have been accused of any wrongdoing in the case. Defense teams for both Rivera and Nuhfer mounted a two-pronged defense throughout the trial. First, they argued that the pair were under no legal obligation to register as foreign agents because their contract was directly with the U.S.-based Citgo, not the Venezuelan central government. Second, Rivera’s lead attorney Ed Shohat told jurors that his client was actually working to remove Maduro from power, not normalize relations between the two countries. “He was working every possible angle to get Nicolás Maduro out,” Shohat said, according to court transcripts from the Associated Press. “There was not a word in the chats about normalizing relations.” The case unfolded against a dramatic shifting backdrop for Venezuelan politics: earlier this year, in January, former President Donald Trump authorized a military strike in Venezuela that resulted in Maduro’s capture. The former Venezuelan leader is currently being held in New York City, awaiting trial on federal drug trafficking charges alongside his wife. Following the verdict reading, during which Rivera showed no visible emotion according to U.S. media reports, the judge ordered the former congressman into immediate detention. Prosecutors successfully argued that Rivera poses a significant flight risk given his ties and possible assets abroad. The conviction caps a decades-long political career for Rivera, who represented a South Florida congressional district for one term from 2011 to 2013, and closes a major chapter in a federal investigation into unregistered foreign lobbying in Washington. Rivera and Nuhfer now face sentencing at a later date, with potential penalties including decades of federal prison time.