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(CNN) – Donald Trump did not back down Tuesday from his questioning of President Barack Obama's birthplace, instead arguing heatedly with CNN's Wolf Blitzer that "a lot of people do not think it was an authentic certificate," though he declined to offer names of experts who agree with him.
The issue of Obama's birth – litigated in the 2008 presidential campaign, then settled when the Obama White House released the long-form version of the certificate in April 2011 – is being brought to the fore in no small part by Trump, who is also set to fund-raise alongside presumptive Republican presidential nominee Mitt Romney Tuesday evening.
On the same day that Donald Trump is teaming up with Mitt Romney for a fundraiser, President Barack Obama's campaign is highlighting what it calls Romney's "refusal" to condemn Trump's continued highlighting of the "birther" conspiracy.
Donald Trump will Join Wolf Blitzer today at 4pm ET in "The Situation Room" on CNN to discuss his appearance with Romney and his stance on the "birther" issue.
CNN's Brian Todd reports on the upcoming "stratosphere jump" of daredevil Felix Baumgartner.
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