Trump's remarks came hours after the court started hearing arguments on whether lower courts have the power to stop his bid to halt birthright citizenship.

The U.S. Supreme Court wrestled on Thursday over Donald Trump's attempt to broadly enforce his executive order to restrict birthright citizenship, a move that would affect thousands of babies born each year as the Republican president seeks a major shift in how the U.

The Trump administration will begin arguments Thursday before the Supreme Court to challenge the Fourteenth Amendment to the U.S. Constitution, which guarantees anyone born in the United States is granted citizenship.