US President Donald Trump plans to sit in on today’s Supreme Court hearing on birthright citizenship, making him the first sitting President to attend oral arguments at the nation’s highest court. 

 

The Republican President’s official schedule, sent out by the White House, included a stop at the Supreme Court, where justices will hear Trump’s appeal of a lower court ruling that struck down his executive order limiting birthright citizenship. 

 

The order, which Trump signed on the first day of his second term, declared that children born to parents who are in the United States illegally or temporarily are not American citizens. 

 

It’s an about-face from the long-standing view that the Constitution’s 14th Amendment and federal law since 1940 confer citizenship to everyone born on American soil, with narrow exceptions.