There a lot of things you dont know how to end immigration, neither Trump doesn't know how to solve. I'm going to give you a hint the cause why immigration happened:

"US Customs and Border Protection won't detect any americans while they carry guns were going to Mexico to sell any people who is going to commit the crime. Eventually Mexican laws are weak for security and provide no protection for future of families from Mexico or different country came to Mexico for crossing the border since US has better laws for public security"