In calling on California Governor Jerry Brown to veto a gay history bill, social conservatives have labeled it an attack on the family

The Democrat-controlled Assembly on Tuesday voted 49 to 25 in favor of Senator Mark Leno's FAIR Education Act. The Senate approved the measure in April. Brown, a gay rights ally, has not publicly declared his stance on the issue.

Leno's proposed legislation would mandate the inclusion of the historical contributions of gay, lesbian, bisexual and transgender Americans in the state's textbooks. As the country's most populous state, California's move could set the tone for textbooks throughout the nation.

Writing at the Catholic Conference's website, Los Angeles Archbishop Jose H. Gomez condemned the measure as an attack on the family.

“The family is God's first beautiful gift to us,” Gomez writes. “Because each one of us came into this world as the fruit of a mother and a father's love.”

“America needs strong families to nurture the values and virtues we need to live as a free and just people.”

The measure, Gomez said, is a “dangerous government intrusion into parents' rights.”

“This amounts to the government rewriting history books based on pressure-group politics. It is also another example of the government interfering with parents' rights to be their children's primary educators.”

Chris Clark, pastor of East Clairemont Southern Baptist Church in San Diego, told the Baptist Press that he objected to the bill because it attempts “to teach that homosexual behavior is normal, that it's acceptable, and that people because of their sexual behavior are somehow heroes in our society.”

Proponents of the legislation say it would help curb the bullying of LGBT teens.