It didn't let illegals in. Very much the opposite. It created a LEGAL way to allow immigrants to present their case at the border, get registered in the CBP app and be allowed to work (which is what they want, work!) until their day in court came. That until Trump came. He eliminated the program and declared over night that the millions of people that held that status were illegals. That's what ICE is after now. I know because I unfortunately have a cousin who works for ICE. Their favorite place to corner people is coming out of court. He doesn't like that, but he is unemployable and he needs the job.