Two days before Christmas, a group led by President-elect Donald Trump's chief architect of immigration policy wrote to state, county and city officials in so-called "sanctuary" jurisdictions to threaten criminal prosecution,

Two days before Christmas, ominous letters warned hundreds of US officials about potential legal actions against sanctuary jurisdictions resisting deportations. Threats of prosecution and financial penalties targeted officials like Massachusetts Governor Maura Healey.

Stephen Miller was the architect of Donald J. Trump’s hard-line immigration agenda in his first term. Now he is back with fewer internal rivals and even more influence with the president.