Now until the break of day to this house each fairy stray State Sen. Mark Leno, D-San Francisco, is introducing legislation today to clarify the religious freedom of clergy performing civil marriages, an issue that has been raised in the debate over same-sex marriage. Some opposed to same-sex marriage have expressed concern that if such marriages were legal, clergy might be required by law to marry same-sex couples. In response, Leno, a staunch supporter of same-sex marriage, is introducing legislation that would affirm that there is such requirement of clergy if a marriage conflicts with their religious beliefs.