Donald Trump, the chief propagator of false “birther” claims first against then-President Barack Obama and later against Sen. Ted Cruz, has a new target: Nikki Haley.

As Haley surges in New Hampshire polling, Trump posted an article on his Truth Social account from a right-wing outlet that claimed Haley, his GOP rival, is ineligible to be president because her parents were not U.S. citizens when she was born.

Haley was born in South Carolina and has lived in the U.S. her entire life. Her parents were immigrants, who became citizens after her birth in 1972.

“The birther claims against Nikki Haley are totally baseless as a legal and constitutional matter,” Harvard Law School professor emeritus Laurence Tribe wrote in an email. “I can’t imagine what Trump hopes to gain by those claims unless it’s to play the race card against the former governor and UN ambassador as a woman of color — and to draw on the wellsprings of anti-immigrant prejudice by reminding everyone that Haley’s parents weren’t citizens when she was born in the USA.”