Donald Trump on Monday suggested he had broadened the scope of his investigation regarding President Obama's background, arguing that - in addition to making inquiries into Mr. Obama's citizenship - he was "looking into" the president's college career.
In an interview with the Associated Press, Trump alleged that Mr. Obama had been "a terrible student," and wondered how he could have been accepted to prestigious schools like Columbia and Harvard Universities.
"I heard he was a terrible student, terrible," Trump told the AP. "How does a bad student go to Columbia and then to Harvard? I'm thinking about it, I'm certainly looking into it. Let him show his records."
Mr. Obama received an undergraduate degree from Columbia University in 1983. (He transferred from Occidental College in 1981.) He then got his Juris doctorate from Harvard Law School, where he graduated magna cum laude in 1991.
Trump provided no evidence of Mr. Obama's "terrible" marks, but did offer the fact that "I have friends who have smart sons with great marks, great boards, great everything and they can't get into Harvard."
"We don't know a thing about this guy," Trump said. "There are a lot of questions that are unanswered about our president."
Trump, who says he is seriously considering a bid for the GOP presidential nomination, has made waves in recent weeks by reviving the thoroughly-debunked "birther" claim that Mr. Obama was not born in the United States.
The business magnate has also stepped up criticism of Democrats on policy-related issues.
In a video recently posted to his YouTube page, Trump accused Democrats of attempting to lead Republicans "into a trap" in regard to certain entitlement programs.
"Medicare, Medicaid, and Social Security must be saved," said Trump, in one of his weekly video chats. "The Republicans cannot be led into a trap by the Democrats, and that's what happening. They must be saved....We must take care of our senior citizens, we can't let anything happen, anything, negative to our senior citizens. Medicare we have to take care of you."
Watch the video below: