Judge Neil Gorsuch sparred with Sen. Dianne Feinstein, D-Calif., at Wednesday’s Senate Judiciary Committee hearings on his Supreme Court nomination over his originalist approach to the law.

Feinstein, the Judiciary Committee’s ranking Democrat, said she worries that Gorsuch’s originalist approach amounted to a regressive view of the law. Originalism is a judicial philosophy that holds the Constitution should be interpreted as it was written.