Then go here for more info, including an explanation of the Soviet “liberation theology” bacillus injected throughout Latin America as an adjunct to the Cold War.
I would add the following:
1) People and cultures are different; if you want a Latino culture, unlimited illegal immigration will get you one.
2) You cannot expect people whose first act is to violate the laws of their new country to become law-abiding citizens.
3) If you imprison the white-guy employers of illegals, you will ratchet down (but not crush) demand for illegals as employees. As Herschel points out, no one is willing to do that.
4) When you have illegals voting, you have lost control of both your elections and your country.