A Jewish Biden administration official resigned over President Joe Biden’s stance on the war in Gaza, becoming the first Jewish staffer appointed by the president to resign publicly.

Lily Greenberg Call, special assistant to the chief of staff in the Interior Department, cited her Jewish heritage as the reason for her resignation. In her letter, she related her deep ties to the United States and Israel but expressed deep opposition to Israel’s conduct in its war against Hamas in Gaza, calling it a “genocide.”