Trump: ‘I have something very, very big concerning the president of the United States’

Donald Trump, the real estate mogul, reality TV star and de facto leader of the "birther" movement, says he is planning a "big announcement" about President Barack Obama.

"I have something very, very big concerning the president of the United States," Trump told "Fox & Friends" on Monday during a phone interview. "I will be announcing it sometime probably Wednesday and it's going to be very big."

"Will it change the election?" co-host Gretchen Carlson asked Trump.

"Possibly," Trump replied. "It's very big—bigger than anybody would know."

Trump—who has been live-tweeting during the presidential debates—said he would likely make the announcement on "the Twitter."

The "Celebrity Apprentice" host was supposed to deliver a "big surprise" at the Republican National Convention in Tampa, Fla., but Hurricane Isaac forced the GOP to cut his appearance from the truncated schedule. The "big surprise"? A video featuring an Obama impersonator who Trump predictably fired.

[Hat tip: Mediaite]