Republican presidential candidate Rick Perry on Sunday endorsed the Boy Scouts of America's (BSA) ban on gay adults.

A proposal to allow gay adults to serve as employees and troop leaders advanced last week with a unanimous vote by the BSA's National Executive Committee.

(Related: Boy Scouts of America committee approves resolution ending ban on gay adults.)

Appearing on NBC News' Meet the Press, the former governor was asked whether he stands by comments he made in a 2008 book.

“Openly active gays, particularly advocates, present a problem,” Perry wrote in On My Honor. “Because gay activism is central to their lives, it would unavoidably be a topic of conversation within a Scout troop. This would distract from the mission of Scouting: character building, not sex education.”

When host Chuck Todd asked whether Perry stands by his remarks, he answered, “I do.”

“I believe that Scouting would be better off if they didn't have openly gay scout masters,” Perry said.

“So, you are against this policy change by [BSA President] Bob Gates?” Todd asked.

“I am,” Perry answered.