It is not that Mexico can't deal with the cartels, they don't want to. Far more income streams into Mexico from drugs money than they have to spend chasing after the nastier cartels who wipe out a bus full of civilians to horrifically torture the cousin of someone who phoned the police on them. It's the same with illegal immigration, the US is full of Mexjeets siphoning welfare an scamming clueless boomers then sending the money back home.