President Donald Trump says he wants to end birthright citizenship, which was included 150 years ago as the 14th Amendment to the Constitution.

Section 1, which contains the Citizenship Clause, of the 14th Amendment states: "All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside."

"It was always told to me that you needed a constitutional amendment. Guess what? You don't," Trump told "Axios on HBO" during an interview slated to air Sunday. "You can definitely do it with an act of Congress. But now they're saying I can do it just with an executive order."

Elise Damas, an immigration attorney working with the Hempstead group Caracen, called the president’s statement a “blatant constitutional challenge” that was already addressed after the Civil War.

Long Island’s Republican Reps. Lee Zeldin and Peter King say the issue of birthright citizenship should be addressed. Neither says they believe President Trump has the power to change it by executive order.

Rep. King says he might support legislation to address abuses of the 14th Amendment.

“I would only support it if it was carefully drawn, that applied to obvious visa fraud, people coming into the country solely for the purpose of having a child and then going back,” says Rep. King.

If the president does issue an executive order, it's expected there would be an immediate court challenge, possibly an injunction, pending a Supreme Court ruling.