The Sinaloa Cartel
The Jalisco New Generation Cartel (CJNG)
The Gulf cartel
Zetas
Knights Templar (LCT)
Juarez cartel
Beltran-Leyva Organization (BLO)
With gruesome details @ Here are the powerful Mexican drug cartels that operate in the US
And not a single one of them would exist if not for Americans buying their poison.