Donald Trump, birther?

Donald Trump is raising questions about President Barack Obama's citizenship.

Trump seemed to throw his lot in with the discredited rumors that President Obama wasn't born in America, saying he's a "little" skeptical of Obama's citizenship and that every so-called birther who shares the view shouldn't be so quickly dismissed as an "idiot."


"Growing up no one knew him," Trump told ABC's "Good Morning America" during an interview aboard his private plane, Trump Force One. "The whole thing is very strange."

In the wide-ranging interview, Trump said he's willing to spend up to $600 million on a presidential bid.

“I have much more than that,” he said. “That’s one of the nice things. Part of the beauty of me is that I’m very rich. So if I need $600 million, I can put up $600 million myself. That’s a huge advantage over the other candidates.”

Trump struck back against the widespread perception that his latest presidential tease is just a publicity stunt.

“I have never been so serious as I am now,” he said.

And Trump had harsh words for his potential rivals: Mitt Romney "doesn't seem to resonate", he said, Tim Pawlenty isn’t “going to captivate the voters,” and Jon Huntsman is “disloyal.