Closing his eyes at times to take it all in, President Donald Trump sat stone-faced for the roughly 90 minutes he spent listening in person to his solicitor general defend his executive order ending the modern interpretation of birthright citizenship before the Supreme Court on Wednesday.

Flanked by Attorney General Pam Bondi and Commerce Secretary Howard Lutnick, Trump sat in the public gallery several rows behind the Department of Justice lawyers arguing before the justices. His expression gave little indication of how he felt about the aggressive questioning Solicitor General D. John Sauer faced from several conservative justices who appeared skeptical of the executive order. But his presence alone was noteworthy.