You believe "illegal immigrants are bad" some of us believe "the laws that make it hard for people to immigrate legally" are bad. They are going to climb walls, swim across rivers, wait in queues, pay money, or do absolutely everything and anything they can to come into the USA. If we make it harder to get in, sure, a smaller number might succeed, but, it isn't going to solve anything. The only solution to illegal immigration is for Mexico to get it's shit straight, and for the quality of life in Mexico to rise. That is the only total solution.
Illegals aren't "invading", they are coming because they want to have a shot at the American dream. If we treat them like criminals, they'll act like criminals. But, I'll tell you this, if I lived in that shithole across the border, I'd do whatever it took to make it north. And I suspect 99% of everybody who things illegal immigration is a problem would also do the same....
This country needs major immigration reform. The statue of liberty says "Give me your tired, your poor/Your huddled masses yearning to breathe free." In doesn't say "fuck you if you aren't American." The message of America is one of majestic greatness, not of elitist greed.