SAN DIEGO - San Diego Mayor Jerry Sanders abruptly reversed his public opposition to same-sex marriage Wednesday after revealing his adult daughter is gay.

Sanders also signed a City Council resolution supporting a legal fight to overturn California's prohibition on same-sex marriages. He previously opposed the resolution.

Sanders fought back tears as he revealed to reporters that his daughter, Lisa, is gay. He said he could no longer back the position he took during his election campaign two years ago, when he said he favored civil unions but not full marriage rights for homosexual couples.

The San Diego City Council voted Tuesday to join other cities in supporting gay marriage. The state Supreme Court is expected to rule on the issue sometime next year.