The GOP nominee first seemed to shrug off a crying baby at a rally, but then said: "I think she really believed me that I love having a baby crying while I'm speaking. People don't understand."
The president said he has disagreed on policy with Republicans and past nominees, "but I never thought they couldn't do the job." That's different this time, he said.
On balance, Americans said Trump's convention made them less likely to vote for him. Clinton's convention, meanwhile, fared far better. What could that mean for the general election?
Virginia Sen. Tim Kaine's positions on Wall Street reforms and trade deals are already drawing the ire of groups who had backed Clinton's primary rival Bernie Sanders.
Going into the conventions for both parties, Hillary Clinton has a distinct advantage. But do the Baton Rouge police shootings, the recent terror-related incidents or these next two weeks change that?
Signs are pointing to the Indiana governor being selected as Donald Trump's vice presidential running mate. Trump is set to officially make the announcement Friday.
The last time people were this dissatisfied with presidential candidates, Ross Perot became a third-party success story. This year, however, there are new hurdles for outsiders.