President Trump’s plan to deport “millions” of immigrants has reached a critical point: Its success likely will depend not on removing criminals, but on telling people who are in the U.S. legally they’re no longer welcome. WHY IT MATTERS: For all the showy raids and tough talk, the largest targets in Trump’s crackdown include immigrants who’ve had temporary protection to stay in the U.S. — more than 1.2 million people who fled wars, oppression, natural disasters, poverty and more. ZOOM IN: