(CNN) - A top aide to Donald Trump is sharply refuting suggestions of hypocrisy in response to the media mogul's release of an unofficial document of his birth only hours after chastising President Obama for failing to produce his official birth certificate.
"I can assure you, Mr. Trump is a U.S. citizen," Trump aide and lawyer Michael Cohen told CNN. "He is only asking for the president to do what the president said he would do – release his birth certificate."
The improbable presidential candidate set off charges of hypocrisy Monday after he provided what he claimed was a copy of his birth certificate to the conservative website Newsmax.com. The release of the document came the same day he told Fox News he keeps his birth certificate "on my desk" and would gladly provide it.
"It took me one hour to get my birth certificate," Trump told Newsmax. "It's inconceivable that, after four years of questioning, the president still hasn't produced his birth certificate."
But, as reported by the website The Smoking Gun and confirmed by Cohen, the document Trump released is in fact not an official birth certificate – instead it is a hospital "birthing record," Cohen says. Hospitals generally provide such documents, signed by administrators, for families upon the birth of a child but they do not count as official birth certificate, which is released by state agencies.
Cohen said the release of the incorrect document was merely an "oversight" that he is sure it will be corrected.
"In order to rectify the oversight, I am sure he will either find his original birth certificate or order another one and release it," Cohen said.
He also applauded Trump for having the hospital's birthing record, a document he says is rare for people to hold on to.
"It's incredible he has that," Cohen said. "I know I don't have mine."
In 2008, the Obama campaign produced a certification of live birth that reports his birthplace as Honolulu, Hawaii – a document the Hawaii government says is official evidence of his birth in the state. Current Hawaii Gov. Neil Abercrombie vowed to produce an original copy of Obama's birth certificate but abandoned those efforts earlier this year because it is against state law to release private documents, according to his spokeswoman.
In his interview with Fox, Trump said he thinks a certification of live birth fails to prove anything.
"They give you a certificate of live birth, which anybody can get. Just walk into the hospital and you get a certificate of live birth," he said. "It's not even signed by people."
Though unsigned, the certification of live birth carries an official state seal, something the document Trump released is lacking.
Among other evidence of Obama's citizenship is the fact the hospital where he was born took out ads in two Hawaiian newspapers in 1961 announcing the birth. But Trump isn't buying that either.
"That was placed in the paper days after he was born," he told Fox. "He could have come into the country and then did it for social reasons – for whatever reasons."
But despite Trump's recent statements, Cohen maintains the "Apprentice" host actually doesn't doubt Obama was born in the United States. Instead he is only providing a voice to the "thousands" of e-mails he has received on his website, shouldtrumprun.com.
A recent CNN Opinion Research poll shows most Americans think that Obama was indeed born in the United States. But there is a partisan divide on the issue.
The survey indicates that 72 percent think the president was definitely or probably born in the U.S., with one out of four saying that he was definitely or probably born outside the country.
Breaking down the numbers further, 46 percent say Obama was definitely born in the U.S., 26 percent say he was probably born in the country, with 15 percent saying he was probably born outside the U.S. and one in ten saying the president was definitely born outside the country.
The figures are little changed from last summer, when CNN last polled on the issue, but a partisan divide remains.
"A bare majority of Republicans, 52 percent, believe that President Obama was born in the U.S., with 43 percent saying that he was born elsewhere," says CNN Polling Director Keating Holland. "By contrast, 11 percent of Democrats and 23 percent of independents say Obama was not born in the U.S."
Earlier this month the Supreme Court again rejected an appeal from a "birther" proponent questioning the citizenship of the president. At least 10 states have introduced bills requiring presidential candidates to provide proof they are natural-born citizens.
At a Democratic party event in Boston earlier this week, the president joked about the controversy, saying "I was born in Hawaii, what can I say? I mean, I just… I can't change those facts."
The CNN/Opinion Research Corporation survey was conducted March 18-20, with 1,012 people questioned by telephone. The survey's overall sampling error is plus or minus three percentage points.
– CNN's Paul Steinhauser contributed to this report