May I recommend that you get all of the 2.5% home financing you can get now. You are about to experience Jimmy Carter era 17% home loans, and 23% credit cards....
I've met Mexicans who skipped the free green card under Reagan. They didn't want to pay the taxes or be liable for any debt.
And what makes him think they want citizenship? Some just want to work here and send the money back home to their families. Unless you promise them a bunch of welfare. Then they'll sign up, but won't take it seriously.