"Today, I'm very proud of myself because I've accomplished what nobody else" was able to do, said Trump, who arrived this morning in the early campaign state of New Hampshire.
"Our president has finally released a birth certificate," he said. Obama "should have done it a long time ago. Why he didn't.... I don't know," Trump said.
The release comes as the legal challenge over the president's birth certificate is scheduled to return to federal court in California on Monday.
The lawsuit, brought by a coalition of 40 "birthers," contends Obama "has never provided proof of his legitimacy" to be president and that "ample evidence" exists to show he may be illegitimate.
U.S. District Court Judge David Carter dismissed the case in 2009, reasoning in part that courts are unable to "disregard the limits on its power put in place by the Constitution and to effectively overthrow a sitting president."
Attorney Orly Taitz, who represents the coalition, has said she believes the courts can and should examine the questions and the evidence to resolve them once and for all. But today she says the issue appears to be resolved.
"If he released it, I assume it's valid," Taitz said. "I would not doubt the ink and the typewriting. That should resolve the issue of him being born in Hawaii. I thank Donald Trump for getting this done."