Donald Trump Defends Linking Ted Cruz's Father to JFK Assassin

The GOP front-runner talked with ABC News' George Stephanopoulos on "GMA."

"It's ludicrous. It's ludicrous. I was never in New Orleans at that time," Rafael Cruz told ABC News Tuesday. "That's typical of Donald Trump; just attack and make all kinds of innuendo and attacks with no substance."

Ted Cruz said, "Let's be clear. This is nuts.”

Trump originally brought up the allegation Tuesday morning. "I mean, what was he doing with Lee Harvey Oswald shortly before the death, before the shooting?" Trump asked. "It's horrible."

But Trump, who now faces an easy path to the Republican nomination, defended his comments.

In the same interview, Trump said that he would accept small contributions in the general election, but didn't want big contributions.

"We will probably take small contributions," he told Stephanopoulos. "I don't want to have anybody have any influence over me, that I can tell you." Trump has insisted for months that he is financing his own campaign, and he has loaned himself most of the dollars he spent in the primary.

He added that his vice presidential pick would be a Republican, "most likely" an elected official who has political experience to work closely with Congress.