In what may be his first major move to the left on policy as a 2020 presidential candidate, Democratic frontrunner Joe Biden has endorsed repealing the Hyde amendment, a measure that prohibits federal funding of abortion except in cases of rape, incest, or when the mother’s life is endangered.

“It can’t stay,” Biden said of the Hyde amendment during an exchange with an ACLU activist earlier this month. The video of the exchange was posted by the ACLU on Twitter on May 8th but has drawn little attention since then (it was flagged by Washington Post reporter David Weigel on Sunday evening).

It’s not clear when or why Biden changed his mind on the issue.