White Democrats must drop out of California’s Senate race, or they aren’t actually committed to diversity, a guest essay in the Washington Post argued.

Democratic Reps. Katie Porter and Adam Schiff have already thrown their hat in the ring in the Senate race to fill the late U.S. Sen. Dianne Feinstein’s seat. But author and podcast host Steve Phillips urged them to step aside and allow U.S. Rep. Barbara Lee, D-Calif. a Black woman, to take the lead instead, to prove they “care about diversity.”

“Time and again it has been shown that Black women are the heart and soul of the Democratic Party. Democrats across the country agree that Black women are badly underrepresented in our nation’s leadership. Schiff and Porter are White; Lee is a Black woman. The right course is clear, isn’t it?” he wrote in his opinion column.