Editor's note: Watch "John King, USA" Friday at 7 p.m. ET for a fact check of Chief National Correspondent John King's interview with Franklin Graham.
Washington (CNN) – The White House pushed back Friday against comments made by Rev. Franklin Graham, one day after the evangelical leader said that President Obama was born a Muslim because of his father's religious beliefs.
Graham, son of famed presidential religious adviser Billy Graham, said Thursday on "CNN's John King, USA," that while he believes Obama is now a Christian, the president was born a Muslim because the "seed of Islam" is passed through the father.
On Friday, White House spokesman Bill Burton said that while Graham is entitled to his own opinion, the president is Christian.
"[T]he president is a committed Christian," Burton told reporters. "I think that the American people know that, and Franklin Graham is certainly entitled to his opinion."
A poll released Thursday, conducted by the Pew Forum on Religion and Public Life, found that nearly one in five Americans believe Obama is a Muslim, up from around one in 10 Americans who last year said they believed he was Muslim.
It's a statistic that has forced the White House to defend the president's faith, a significant distraction from the administration's political and policy goals.
Burton said Friday he isn't sure why the numbers have increased.
"I can't say why people necessarily changed their mind in this poll, I can't say why folks even answer the question when pollsters call," Burton said.
Asked by CNN Chief National Correspondent John King on Thursday if he had any doubts about Obama's Christian faith, Graham, who has made controversial comments about Islam in the past, said the president's background is fueling the false perception that he is a Muslim.
"I think the president's problem is that he was born a Muslim, his father was a Muslim. The seed of Islam is passed through the father like the seed of Judaism is passed through the mother. He was born a Muslim, his father gave him an Islamic name," Graham said on CNN's "John King, USA."
"Now it's obvious that the president has renounced the prophet Mohammed and he has renounced Islam and he has accepted Jesus Christ. That is what he says he has done, I cannot say that he hasn't. So I just have to believe that the president is what he has said," Graham continued.
Earlier this year, the Army rescinded its invitation to Graham for the National Day of Prayer at the Pentagon over controversial remarks he made about Islam.
"True Islam cannot be practiced in this country," he told CNN last December. "You can't beat your wife. You cannot murder your children if you think they've committed adultery or something like that, which they do practice in these other countries."
Graham later tried to temper his remarks by saying that he had Muslim friends. However, Graham has a history of comments that bothered the Pentagon. Shortly after the terrorist attacks of September 11, 2001, Graham called Islam a "very evil and wicked religion."
In April, President Obama prayed with the Rev. Billy Graham and his son Franklin at Graham's mountaintop home in North Carolina. Billy Graham, a major figure in the American evangelical movement, has advised presidents dating back to Harry Truman.