COLUMBIA, S.C. – U.S. Rep. Tom Rice, who hid in an office as rioters overran the U.S. Capitol last week, acknowledged Thursday that his vote to impeach President Donald Trump could cost him reelection as a conservative Republican but said Trump's failure to calm the mob left him no other choice.Rice represents a South Carolina district fiercely loyal to Trump, yet on Wednesday night, the congressman became one of just 10 Republicans to join Democrats in voting to impeach the president, in a stunning reversal from his position days earlier.The rare Republican votes to make Trump only the first president ever impeached twice drew angry outbursts and calls to state Republicans that made clear that splitting from Trump could come at a heavy.