Republican presidential candidate Donald Trump arrives for a meeting with House Speaker Paul Ryan at the Republican National Committee Headquarters on Capitol Hill Thursday.
President Obama said he regrets that the rancor between the parties has grown during his watch. "I guarantee I'll keep trying to be better so long as I hold this office," he said.
"My goal is to help unify the conservative movement."
At a news conference following a closed-door GOP caucus meeting, Speaker of the House Paul Ryan, R-Wis., dismisses Republican presidential candidate Donald Trump's comments on Muslims.
J. Scott Applewhite/AP