A US Park Police helicopter flies near the US Supreme Court, ahead of the expected arrival of US President Donald Trump at the court in Washington, DC on April 1, 2026. President Donald Trump will watch the US Supreme Court hear a landmark case weighing the constitutionality of his contentious bid to end birthright citizenship, an extraordinary and possibly unprecedented move for the nation's highest office. (Photo by Karyn NISHIMURA / AFP via Getty Images)

Police officers stand outside US Supreme Court, ahead of the expected arrival of US President Donald Trump at the court in Washington, DC on April 1, 2026. President Donald Trump will watch the US Supreme Court hear a landmark case weighing the constitutionality of his contentious bid to end birthright citizenship, an extraordinary and possibly unprecedented move for the nation's highest office. (Photo by Kent Nishimura / AFP via Getty Images)

WASHINGTON, DC - APRIL 01: Members of the media set up outside the U.S. Supreme Court ahead of U.S. President Donald Trump's expected arrival on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Al Drago/Getty Images)

WASHINGTON, DC - APRIL 01: People demonstrate outside the U.S. Supreme Court ahead of U.S. President Donald Trump's expected arrival on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Al Drago/Getty Images)

WASHINGTON, DC - APRIL 01: People demonstrate outside the U.S. Supreme Court ahead of U.S. President Donald Trump's expected arrival on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Al Drago/Getty Images)

WASHINGTON, DC - APRIL 01: A cyclist fist bumps a demonstrator outside the U.S. Supreme Court ahead of U.S. President Donald Trump's expected arrival on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Al Drago/Getty Images)

WASHINGTON, DC - APRIL 01: People demonstrate outside the U.S. Supreme Court ahead of U.S. President Donald Trump's expected arrival on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Al Drago/Getty Images)

WASHINGTON, DC - APRIL 01: Police are seen ahead of U.S. President Donald Trump's expected arrival to the U.S. Supreme Court on April 01, 2026 in Washington, DC. The Supreme Court is hearing oral arguments in Trump v. Barbara to determine if President Trump's executive order ending birthright citizenship is constitutional. According to historians and the Court, this is the first time a sitting president has attended oral arguments at the nation's highest court. (Photo by Andrew Harnik/Getty Images)