The US has fixed El Salvador and Honduras in the 1970s-80s.
You might want to do a little research. I would suggest starting with MS 13 - Mara Salvatrucha. They are out of El Salvador, and active in about 40 cities, with about 10,000 gang members. Some have been deported back to El Salvador, which simply relocated the proble, as El Salvador does not have the infrastructure to deal with them. Their influence even reaches into the ruling political parties there.
The 18th Street Gang, aka M-18 or Barrio 18, is spread from Central Ameica to the U.S. and Canada. Drug sales, murder for hire, extortion, prostitution, kidnapping. Membership primarily of Mexican descent, but now open to others is estimated in the tens of thousands.
The Mexican Mafia, aka Emeros or EME. Drugs, racketeering,paid hits, and fraud are among their specialties.
Tjhe Rollin’ 60 Neighborhood Crips - 2,000+ members, specialize in banbk robberies, car jackings, keadly weapons assaults, home invasions and rape.
Barrio azteca of Los Azteca, with several thousand members are spread from New Mexico and Texas to Massachusetts and Pennsylvania, are affiliated with the Juarez Drug Cartel in Mexico, and are knows for cocaine trafficing, high profile murders and even prison massacres.
So we get some and we end up shipping them back. and the countries simply do not have the political and economic will to deal with the gangs, and the situation goes from bad to worse.
Yes, there hare hundreds of thousands, even millions who are not gangs. But let’s not kid ourselves about how great those countries are doing.