A sleepy Colorado farm town that voted overwhelmingly for President Donald Trump has become ground zero in the national fight over immigration and a flashpoint in the battle for the U.S. House.Hudson, a one-stoplight town 45 minutes from Denver, is set to house the Big Horn detention center inside a shuttered prison on its edge. Run by private prison giant The GEO Group under a $529 million contract, the facility could hold up to 1,200 detainees…