Sen. Lindsey Graham wants President Donald Trump to stick to his guns in the fight over funding for a wall on the U.S.-Mexico border and warned that giving in to Democrats' demands could be "the end of his presidency." 

With a partial government shutdown – sparked by the fight over funding for the wall – in its second week, the South Carolina Republican on Wednesday told Fox News host Sean Hannity that GOP lawmakers won't back down "until we get the money." Trump is seeking the approval of more than $5 billion toward the construction of a border wall.