street gang MS-13, or La Mara Salvatrucha [link to en.m.wikipedia.org (secure)] --

New York Congressman says MS-13 are smuggling unaccompanied minors into US
Peter King claims notorious gang may have brought more than 4,000 kids to Long Island in two years.

... "Intelligence is showing MS-13 is getting families in communities like Brentwood and Central Islip on Long Island — either threatening the families or paying the families to volunteer to take these kids, and HHS [Health and Human Services] sends the kids into these neighbourhoods," ...

... "The reality is ... many of them, a significant number, are terrorising the neighbourhoods which they are in."

[link to www.ibtimes.co.uk]