Representative Henry Cuellar, a Democrat from Texas, and his wife, Imelda, have been accused of participating in a $600,000 bribery scheme involving Azerbaijan and a Mexican bank, according to a federal indictment unsealed in Houston. The charges include bribery, money laundering and acting as an agent of a foreign entity while an employee of the U.S. government, according to a report in The New York Times.

Cuellar is accused of accepting bribes in exchange for legislative support favorable to foreign interests, including promoting bills to benefit companies that paid bribes to his family. The indictment also alleges that Cuellar tried to weaken laws related to the payday loan industry and the Mexican banking sector.

While many of Cuellar's actions appeared to be legitimate policymaking activities, prosecutors claim there were ulterior motives behind them, turning these actions into an illegal and mercenary scheme. The couple was released on bail and vehemently denied the charges.

These charges represent a sensitive moment for Democrats, as Cuellar is a prominent member of the party and represents a key district along the border with Mexico. The indictment also raises questions about Cuellar's re-election prospects and has the potential to damage the party’s image.

Detailed interactions between Cuellar and Azerbaijani officials, along with evidence of efforts to influence U.S. foreign policy in favor of Azerbaijan, are highlighted in the indictment. These interactions included speeches praising Azerbaijan in Congress and attempts to pressure the Obama administration to take a tougher stance against Armenia.

Cuellar's case echoes previous accusations against other politicians, such as Senator Robert Menendez, and raises concerns about influence peddling and corruption in the U.S. political system. The indictment also highlights Azerbaijan’s role in lobbying the United States and its attempt to gain support for its agendas through political and financial influence.

While Cuellar has denied the allegations and maintained his innocence, the case continues to unfold, raising questions about ethics and integrity in government and politics.