I've been in contact today with the Washington DC HSI office. Got the whereabouts of a likely MS-13 don. But I don't have any verified links, just a bunch of his FB friends who don't look too upstanding. He's out in a suburban area which is gang infested, has the typical tattoos, etc. But more like a senior member who would control the soldiers. HSI/ICE probably won't act until there is a network they can pick up.