It is a cycle. We expel the same illegal aliens over and over and over down near the border. That's why that number you keep quoting (and fudging) is so high. Border Patrol catches the intruder, transports back to the border, expels them back into Mexico, and the very next day the same intruder is back across the border, getting detained again, and expelled again. Ask ANY Border Patrol Agent, man. I live here. I know this. Wise up.
I don't think most of the voluntary departures are multiple entries, but even if it is just 1 million INDIVIDUALS caught and expelled repeatedly, that's more than most Americans think there is given all the hysterics.