Without immigration, both legal and illegal, the population growth of the US would be negative. That is not a rant, that is a fact. The population of the US is aging, fast, immigration helps to alleviate that problem, and yes, it is a problem. Ask Japan. Another fact. Illegal immigrants contribute billions, BILLIONS of dollars to Social Security, knowing they will never get anything in return. That is a fact. Without those funds the Social Security trust fund goes broke that much quicker.
Every economist worth two shits will tell you, immigration, both legal and illegal, is a net positive. Don't even try to post something from FAIR that attempts to claim otherwise, mostly by claiming the expense of educating citizen children is a cost of immigration. And don't even attempt to give me those bogus charges for uncompensated medical care of illegal aliens. I will rip it to shreds.