Donald Trump Pushes Republican Party to Its Breaking Point

Several top backers — including Republican National Committee Chairman Reince Priebus, former House Speaker Newt Gingrich and former New York Mayor Rudy Giuliani — are trying to persuade Trump to move past his feud with the parents of the late Iraq War soldier Humayun Khan, stop bashing fellow Republicans like House Speaker Paul Ryan and Sen. John McCain, and refocus his attacks on Hillary Clinton.