Tennessee state Senator Stacey Campfield once argued that his 'Don't Say Gay' bill protects kids from things like bestiality.

With a 6-3 party line vote on Wednesday, the bill, which would prohibit the discussion of sexual minorities in public schools before the ninth grade, won the approval of the Senate Education Committee. It now moves to the full Senate.

Supporters say the bill is about promoting age appropriate curriculum.

“If we're talking about homosexuality, we are talking about specific acts that are going to be unhealthy for anybody to engage in outside of marriage,” Matthew Parsons, founder of the socially conservative group Something Better, told the local CBS affiliate.

Campfield has argued his measure would give teachers more time to focus on the basics, such as arithmetic.

But in a recent rebroadcast of a 2009 interview with SiriusXM's Michelangelo Signorile, Campfield, who has sponsored the bill in five previous sessions, likened being gay to bestiality.

While discussing the bill, Signorile, who is openly gay, asked, “If you teach the civil rights movement, why not teach the gay rights movement?”

“Because they're different types of movements,” Campfield responded. “If I want to talk about the bestiality movement, do you think we should be teaching that?”

Earlier in the interview, Campfield mocked Signorile's claim that people are born gay – “You don't believe that? Who are you kidding?” he rhetorically asked – and insisted that being gay was a “learned behavior.”