(CNN) - Donald Trump continues to fire questions at President Barack Obama about his birthplace.
The real-estate mogul is set to meet with the "birther bill" sponsor, Republican Arizona State Rep. Carl Seel, Friday in New York City's Trump Tower.
The bill would require any presidential candidate to prove that he or she was born in the U.S.
Trump, who is considering a presidential bid, has caused a stir by questioning if the president was born in the United States.
In 2008, the Obama campaign produced a certification of live birth that reports his birthplace as Honolulu, HI. Critics insist that's not the same as a birth certificate, and doesn't qualify as proof.