House Speaker Paul Ryan said in an interview on CBS "Face the Nation" Sunday that President Trump's campaign rallies "sometimes" cause division and that "sometimes he doesn't" practice unifying politics. "I worry about tribal identity politics becoming the new norm of how politics is waged," Ryan added.

Why it matters: The president’s brand of political rhetoric has been long criticized by Democrats and a handful of Republicans. In the wake of recent violence ahead of the midterm election, Trump called for unity and pledged to prevent "political violence to take root in America." But at subsequent campaign rallies, Trump abandoned his scripted call for national solidarity and lashed out against the media and critics he said are "enemies."