Which cartel is boxer Julio César Chávez Jr. alleged to have ties with?

Julio César Chávez Jr., the son of the legendary Mexican boxer Julio César Chávez, has been the subject of various allegations regarding his connections to organized crime. The Sinaloa cartel, one of the most powerful drug trafficking organizations in Mexico, has been frequently mentioned in these contexts. This cartel is known for its extensive network and significant influence in the drug trade, particularly in the trafficking and distribution of narcotics.

The choice of the Sinaloa cartel as the correct answer stems from the publicized connections and allegations surrounding high-profile figures in Mexico, including sports celebrities. Chávez Jr.'s alleged ties are often highlighted in conjunction with the Sinaloa cartel due to its notoriety and the prominence of organized crime in Mexican society. This context supports the reasoning behind identifying the Sinaloa cartel as the group he is alleged to have ties with.

Other cartels mentioned, such as the Jalisco cartel, Zetas cartel, and Gulf cartel, also have their own issues and connections with various public figures, but in the case of Chávez Jr., the association with the Sinaloa cartel has been more prominently noted in media reports and public discussions.