The Washington Post's Jonathan Capehart and the Huffington Post's Alex Wagner claimed that Donald Trump was dividing the GOP Monday on MSNBC's Hardball with Chris Matthews.

"For someone to rise to the top of more than one poll based on a lie -- based on a long disproven contention that the President of the United States was not born in the United States and is not an American -- and that is someone who should not be a party's nominee," Capehart said.

Visit for breaking news, world news, and news about the economy