The U.S. Supreme Court heard oral arguments Wednesday morning in a case that could reshape the constitutional right to birthright citizenship.

President Donald Trump, in one of his first moves in office in January 2025, issued an executive order that sought to end birthright citizenship. That led to a flurry of lower court challenges that’s made its way to the highest court in the land.

If the court rules to limit or end constitutional protections for birthright citizenship, that could mean some 250,000 children born in the U.S. each year would be without citizenship.

University of Minnesota professor and constitutional law expert Jill Hasday was listening in on the arguments and joined MPR News host Nina Moini to explain.