Well I looked into this for you, OP, and this is what I found:

The only evidence of this is Tom DeLay's testimony, nothing else, which is only hearsay and barely qualifies as evidence at all.

Video of him saying these things here ( 30 Jun 2015 ): http://www.newsmax.com/Newsmax-Tv/Tom-DeLay-Justice-Department-perversions/2015/06/30/id/652929/

"We've … found a secret memo coming out of the Justice Department. They're now going to go after 12 new perversions. Things like bestiality, polygamy, having sex with little boys and making that legal"

Go to 2:55 in the video to listen to that part, specifically.

BUT out of curiosity I looked this guy up.

His wikipedia page says:

DeLay's website concludes by saying that the former congressman and his wife "continue to be outspoken advocates for foster care reform and are actively involved in a unique foster care community in Richmond, Texas, that provides safe, permanent homes for abused and neglected kids." Rio Bend, a "Christ-centered" community which the DeLays founded, opened in 2005

Source: http://riobend.org/ A website so strange that I went ahead and archived it. http://archive.is/ZSCEu

Another: http://artreachtexas.org/pages/artreach_at_rio_bend_602.asp

Rio Bend Community Catholic Charities parnters with ARTreach to connect customized programs that support children in international foster care. The children are refugees and orphans coming from many different countries, including Liberia, Congo, Burma, Afghanistan and Honduras. The ARTreach program tries to bridge the numerous communication gaps, and build new relationships through the influence of the cultural arts. ARTreach is connecting the children to dance, ceramics and other expressive art programs to support their acclimation process and to provide an avenue that can help the children express their emotions and cope with their transition.

Archive: http://archive.is/oayYN

Interesting background for a guy who suddenly comes out of the woodwork to talk about threats of legalized perversions, as he put it.

Also the guy left the government in 2006, yes? But waits until 2015, 9 years later to make this claim.

A strange situation all around. Not sure what to think of it right off the bat.

Sounds like some sensationalist bullshit that doesn't link to any sources to me irrelevant, fake , and gay. Please delete your submission as it doesn't really add anything to this investigation.