Former President Trump was back in a New York courtroom Monday, this time for the start of his first criminal trial in a matter involving a hush money payment made to adult film actress Stormy Daniels just before the 2016 election.

The trial began Monday with debate over what evidence would and would not be allowed in the case. Jury selection followed in the afternoon, in which nearly 100 people arrived in the courtroom where Trump was seated at the defense table. More than half of them were almost immediately excused when they admitted they couldn’t be impartial in the case.

Trump makes history as the first former or current U.S. president to ever face a criminal trial in a case that also made him the first former commander-in-chief to be criminally indicted.

Jury selection is expected to resume Tuesday.

See below for a recap of the first day of proceedings at the courthouse in Manhattan.