A group of Donald Trump supporters have filed a lawsuit asking a judge to rule that fellow GOP candidate Ted Cruz is ineligible for the office of president.

The suit, filed in Alabama, seeks to declare that Cruz “is ineligible to qualify/run/seek and be elected to the Office of the President of the United States of America,” according to papers obtained by Washington blog The Hill.

The pack of Trump devotees seeks the ruling on the grounds that Cruz was born in Calgary, Canada, albeit to an American mother.

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Representatives for Cruz did not immediately return TheWrap’s request for comment.

“Mr. Cruz was born in Canada, and obviously Canada is not a territory or protectorate of the United States, it’s not dominion of the United States,” attorney Thomas Drake said.

“And as such, when he was born, at the moment of his birth, location determined his status, and his status was that of a natural-born Canadian citizen.”

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The case comes on the heels of another filed at the federal level in Texas, which demands a hearing clarifying Cruz’s citizenship status.

“The U.S. Constitution is not a popularity document for fair weather only,” that suit, filed by Newton Schwartz, said, invoking a debate over naturalized and natural-born citizens.

The Constitution says “no person except a natural born citizen, or a citizen of the United States, at the time of the adoption of this Constitution, shall be eligible to the office of president.”