Yarrington was also accused of allegedly receiving money from Osiel Cárdenas Guillén, the former drug boss of the Gulf cartel, to finance his political campaign for the presidential campaign in 2005 against Roberto Madrazo; according to the reports of "Animal Político", Osiel asked Costilla Sánchez and Heriberto Lazcano Lazcano, his associates, to send millions of dollars to Yarrington's collaborators, with hopes of escaping from prison if Yarrington became president, just like Joaquín Guzmán Loera (a.k.a. "El Chapo"). In a civil forfeiture lawsuit filed in Corpus Christi on 12 May 2012, Yarrington is said to face forfeiture of a condominium he owns in South Padre Island that federal authorities believe he purchased with "illegally obtained funds" and under another name to avoid detection by law enforcement. Court records say that Yarrington used $450,000 from the Gulf cartel to pay the 14th floor unit. The indictment also alleged that a Mexican businessman known as Fernando Alejandro Cano Martínez used several corporate entities in Texas to launder money by the Gulf Cartel to pay top politicians in Tamaulipas. These bribes were then paid to the politicians in Tamaulipas in exchange for little to no police intervention in the Gulf Cartel's trafficking and money laundering activities. Cano Martínez is also accused of bank fraud because he obtained several bank loans with false information. The U.S. authorities are trying to confiscate Yarrington's condominium in South Padre Island and a 46-acre property in San Antonio, Texas. All these properties are believed to have been bought by Yarrington with drug proceeds from the Gulf Cartel, a criminal organization headquartered in the city of Matamoros, Tamaulipas (where he served as mayor). The laundered money is believed to have granted the Gulf Cartel and Los Zetas "political influence" in the state of Tamaulipas.