Denver Mayor Mike Johnston is prepared to face arrest over his opposition to President-elect Trump's mass deportation plans, which prioritize sanctuary cities. Trump’s border czar nominee, Tom Homan, asserted that Johnston is breaking the law and threatened to jail him if he does not comply with federal directives. Johnston has clarified that he will not cooperate with deportations except in cases involving violent criminals. As tensions heighten, both sides emphasize differing interpretations of legal authority in immigration enforcement amid broad national debates.