WASHINGTON — After Democrats' overwhelming midterm victories this week, winning candidates spoke of the need, once they are sworn in, to rein in President Donald Trump's mass deportation machine. Some suggested putting forward a new vision for immigration reform while both houses of Congress are in Democratic control. The lofty goals come after two years in which Democrats, while in the minority, were limited in how much they could counter Trump's supercharged and, at times, chaotic immigration enforcement. But there are clear limits to what they can achieve even after Democrats' epic win, with Trump — who rode into power in part on a promise to curb immigration — in office for another two years and wielding his veto power. What's more, Republicans have frontloaded billions of dollars for immigration enforcement. And the key architect of the president’s hard-line immigration agenda, Stephen Miller, was elevated Friday to become Trump's chief of staff — suggesting immigration enforcement may not slow down any time soon. Here's a look at what might come next for immigration afte