Just one week before the death of Justice Ruth Bader Ginsburg, whom she has been nominated to replace, Barrett participated in a mock court hearing on the pending case. She was part of an eight-judge panel that heard the mock arguments, conducted at William & Mary Law School.

None of the judges ruled in favor of the administration and Republican states’ request to strike down the law.

Five of the judges ruled that one part of the law — the so-called individual mandate, which Congress has already effectively nullified — was unconstitutional, but that the rest of the healthcare law could stay in place. The other three judges would have thrown out the case, arguing that the conservative states challenging the law did not have standing to bring the suit.

It’s not known which side Barrett was on because the participants’ votes were not revealed, according to a person who viewed the session and declined to be identified.