Rubio was born in Florida on May 28, 1971. His parents had come to the United States from Cuba in 1950s. Trump retweeted a tweet on Saturday that suggested both Rubio and Texas Sen. Ted Cruz were ineligible to be president.

“I think the lawyers have to determine that that — and not— it was a retweet, not so much with Marco. I’m not really that familiar with Marco’s circumstances,” Trump said Sunday morning.

“But then why retweet it?” Stephanopoulos asked.

“Because I’m not sure. I mean, let people make their own determination. I know Ted is being now — I think he’s being sued by somebody having nothing to do with me, by the way,” Trump said.