Peter LaBarbera, president of Americans For Truth About Homosexuality, has criticized companies backing gay marriage in two briefs filed before the U.S. Supreme Court.

Nearly 300 corporations, from Apple to Xerox, signed on to the briefs which call on the high court to strike down the Defense of Marriage Act (DOMA) and Proposition 8, California's gay marriage ban. The Supreme Court will hear oral arguments in both cases later this month and is expected to hand down rulings in June.

(Related: Gay groups cheer as Obama urges Supreme Court to strike down Prop 8.)

In an interview with Instant Analysis (formerly OneNewsNow), LaBarbera criticized the companies for “pushing homosexuality on the American public.”

“[W]hen you start pushing homosexuality on the American public using the government, that's another matter. Then it becomes a tool of repression against Christians and people of faith who simply want their right to not support homosexuality,” LaBarbera said.

He went on to describe the Prop 8 case as essentially the Roe v. Wade of the gay rights movement.

“If the court imposes national homosexual marriage, that will be a disaster – and it will fuel the culture wars for decades to come,” LaBarbera said.