How can the United States reduce illegal immigration? In 2010, I wrote:
The reality is that only four policies can significantly reduce illegal immigration.
The first is allowing more legal immigration. …
The second … is to expand free trade. …
A more controversial way to shrink illegal immigration is to de-escalate the war on drugs. …
A further policy that might reduce immigration is scaling back the U.S. welfare state, although the impact of any such change is unclear.
These approaches bring additional benefits because all four make sense regardless of the immigration situation.
Read the explanations here.
Latin American and Caribbean countries have the highest murder rates in the world (google "countries by homicide rate" for some great lists), largely because of drug gangs. If I lived there, I'd do everything I could to send my kids somewhere safe, and the US would be the obvious first choice.