MS-13 (and to some extent, gangs like the bloods, crips, etc) are not local regional street gangs.
This isn't dueces or aces or some crap.
They are national interstate crime syndicates.
They operate across state and even national (see southwest border) boundries.
They form networks and cells, and operate out of a command structure that, will require a multi-pronged joint law enforcement effort.
Sealing the borders or at least doing something there would be an easy first step.
These guys are rapidly escalating in complexities and financial operations with predominatly violent crimes as well as having absolutly no qualms or criteria of who they would work with.
In other words, don't be surprised if these are the kinds of guys who would try to sneak terrorists over the borders, or arm them.
Its absurd to think that states or local municipalities are supposed to be equipped to handle national organizations with multiple bases of operation.
Without going into details, there is at least one major MC gang thats known to do both surveilance and counter surveilance on law enforcement authorities, if these street gangs are going to or already are, then we've got a snowball thats already turning into an avalanche.
yup ,...it is getting worse here in the NYC tri-state area[really the entire northeast]