CLEVELAND — In an appeal to anxious voters, Donald Trump is pledging Thursday night that "safety will be restored" if he is elected president, using his Republican convention address to denounce Democrat Hillary Clinton as part of a political class causing the nation's troubles. "As long as we are led by politicians who will not put 'America First,' then we can be assured that other nations will not treat America with respect," Trump says, according to excerpts released ahead of his address. Trump's speech on the closing night of the Republican convention marks his highest-profile opportunity to unite his fractured Republican Party and quiet Americans' concerns about his preparedness for the White House.