New Hampshire and Michigan are working on legislation to make gay adoption legal.
Massachusetts legalized adoption for same-sex couples in 2006. That move led the state to mandate that Catholic Charities of Boston refer children to gay couples. The group discontinued its century-old adoption program under that pressure.
Ron Stoddart, president and executive director of Nightlight Christian Adoption Agency in California, said the family itself is at stake.
"It's just a continuation of the cultural trend of breaking down the basic foundation blocks of the family," he Family News in Focus.
Stoddart said in his state, homosexuals use antidiscrimination laws to ensure they can adopt. He says it's a formula he expects to see leveraged across the country.
"It will come up, in my opinion, not as a matter of legalizing same-sex couples being able to adopt," he said, but through states modifying nondiscrimination clauses intended to offer protection for race, gender and religion.
Kelly Shackelford, chief counsel for Liberty Legal Institute, said people of faith should keep fighting attempts to place children in homes that, by definition, exclude either a mom or a dad.
"We're going to stand by what's best for these children," he said, "and what's best for these children is to have a mom and a dad."
(Paid for by Focus on the Family Action)