A pair of political operatives tied to Rep. Henry Cuellar, D-Texas, have agreed to plead guilty and cooperate with the Justice Department’s bribery case against Cuellar, according to court documents unsealed this week. Mina Colin Strother, Cuellar’s former campaign manager and chief of staff, and Florencio “Lencho” Rendon, a Texas businessman described as a “close associate” of Cuellar in court documents, both signed plea deals in March. The Justice Department last week released an indictment accusing Cuellar and his wife, Imelda, of accepting $598,000 in bribes from foreign entities, including a Mexican bank and an oil and gas company controlled by Azerbaijan. Strother and Rendon were both charged with conspiracy to commit money laundering in connection with the scheme. Cuellar and Rendon are alleged to have come up with the scheme in 2015 after they learned that the bank was struggling to conduct business in the U.S. They devised a “sham consulting contract” with the bank and a plan for Rendon to funnel a majority of its proceeds to Cuellar’s wife, according to court documents. Rendon approached …