Build a wall the whole way, put up minefields, alligators in the Rio Grande River. Hire more border security, place checkpoints along the border for legal entry, start a migrant worker program again that works, so we can still have the labor, Mexicans can still get paid and send it home, and so we can know who is in our country and when. Almost no where on earth can you just cross a border into another country (youd be shot) and Illegal Immigrants are ILLEGAL and should be punished just like any of us would be punished for doing something illegal (ie. smoking a joint, speeding, beating your wife..etcetc.) America needs to get real and understand that the world isnt like us, and we are hated. Terrorism is the in weapon at the moment and we need to be prepared.