“For President Obama not to accept $5 million (or much more) for his favorite charity can only mean one thing — the records are very bad," Trump wrote on his Facebook page. “Obviously he wasn’t born in this country, or, if he was, he said he wasn’t in order to receive financial aid and in order to have a clear and very easy path into a college or university. Only a very stupid person would believe otherwise. There can be no other reason that so much money would not be so easily and routinely collected for charity.”

After playing up an election-shaking announcement for several days, Trump last week offered Obama $5 million to release his college and passport records. The original deadline for Obama to take up the offer was Oct. 31, but Trump extended it because of Hurricane Sandy.

Obama aides have mocked the announcement by tying Trump to Mitt Romney. Trump, who toyed with the idea of a presidential run of his own, has endorsed the GOP nominee. The businessman also recently recorded robo-calls for Romney that will go out in a handful of key battleground states.

“The fact is, this may go down as the greatest con in the history of American politics, or perhaps the greatest con of all time,” Trump continued. “When these records actually do surface in the future, people will say Donald TrumpDonald John TrumpDems seek to chip away at Trump’s economic record Trump to sign directive to reform commercial space regulations Trump on collision course with Congress on ZTE MORE was 100 percent correct.”

Trump contends Obama was not born in the U.S., and is thereby ineligible to hold the office of the presidency.

President Obama was born in Hawaii in 1961, and the White House has provided a long-form copy of his birth certificate.