San Francisco Archbishop Salvatore Cordileone has called for an amendment to the U.S. Constitution prohibiting gay and lesbian couples from marrying.

“An amendment to the U.S. Constitution is the only remedy in law against judicial activism,” Cordileone told bishops meeting in New Orleans at the U.S. Conference of Catholic Bishops' (USCCB) summer meeting.

Cordileone, who heads the USCCB's Subcommittee for the Promotion and Defense of Marriage, is expected to speak at next week's second annual March for Marriage. Thursday's rally and march to the steps of the U.S. Supreme Court is being organized by groups opposed to marriage equality, including the National Organization for Marriage (NOM) and the Family Research Council (FRC).

More than 80 prominent California leaders have called on Cordileone to skip the event. An additional 22,000 people, as of Thursday, have signed a Faithful America petition calling on Cordileone to not “speak at hateful anti-gay rally.”

(Related: Gavin Newsom, Ed Lee to Salvatore Cordileone: Cancel on NOM's “March for Marriage.”)