premise: MS-13 is a part of the Mexican Cartel.
hypothesis: MS-13 ( Mara Salvatrucha ; also known as simply MS or Mara ) is an international criminal gang that originated in Los Angeles , California , US in the 1980s . The Tijuana Cartel ( Spanish : Cártel de Tijuana ) or Arellano-Félix Organization ( Spanish : Cártel Arellano Félix - CAF ) is a Mexican drug cartel based in Tijuana .