Mmmm? USA LE could stop MS-13 any time they wanted to, its not like their tradecraft is particularly novel. And USA LE undoubtedly has deeper relationships with regional security forces, and probably their hardware, that they can leverage and China cannot. China is buddies with Cuba and Venezuala already, who are much more defensible against US invasion. Not that China minds new friends, but I'm not seeing a compelling interest to justify taking the slightest risk. I'm still baffled. Maybe somebody close to Trump really didn't give a toss for El Salvador and decided to sabotage agency efforts to get involved?