Legislation that requires presidential candidates to prove they are natural-born American citizens before their names can appear on the Arizona ballot was approved by the state Senate on Wednesday.

The bill, H.B. 2177, requires presidential candidates to submit a certified copy of their birth certificate that includes their date and place of birth, the names of their mother and father, and the name of the hospital they were born at.

The Arizona Senate passed the bill in a party-line vote of 20 to 9, with Republicans backing the bill. It now heads to the state's House of Representatives for approval.

The bill was sponsored by State Rep. Carl Seel, who recently met with billionaire real estate mogul and potential Republican presidential candidate Donald Trump to discuss the legislation.

Trump first revealed he had some doubts that Obama was a U.S. citizen during an interview with ABC News' Ashleigh Banfield in March.

Later appearing on Fox News, he claimed that the president has not provided his birth certificate and suggested that Obama has "spent millions" trying to avoid the question.