They will try, make no mistake. The next Democrat to fraud their way into the presidency is going to one up this with pure lunacy.
1. Too many.
2. Literally hundreds of thousands. Just the Surenos gang (cartel affiliates) alone has 50,000 members in LA County. Are you really stupid enough to think the same cartel-funded drug traffickers who know all the back routes in the country don't know how to take a detour to cause havoc, or just decide to wipe out a traveling white family in the middle of nowhere late at night?
3. They would once any brown-skinned person is thought to be a potential cartel terrorist. Beside, Jorge might moonlight as a drug trafficking shooting cops, but by day he's a respected community member
This is why invading Mexico or starting a war with cartels is so painfully stupid on the level of Bush's forever wars. Especially since you won't even wipe out drug trafficking since the cartels will just move those operations elsewhere. Better invade them too!