Elizabeth Warren has demolished the “hateful” Republican platform over a suggestion that the children of gay couples are more likely to become drug addicts.

The astounding claim is made in the official GOP platform, which is set to be approved at the Republican National Convention next week. As evangelicals and right-wingers currently dominate the internal party infrastructure, its platform has become one of the most regressive ever seen on LGBT rights.

In a section on protecting “traditional” marriage between one man and one woman, the policy suggests: “Natural marriage between a man and a woman is most likely to result in offspring who do not become drug-addicted or otherwise damaged.”

The platform rejects attempts to ban ‘gay cure’ therapy for minors, claiming “parents should be free to make medical decisions about their children without interference”, meanwhile upholding children’s “right” to be raised by their mother and their father.

It calls for the Supreme Court ruling on equal marriage to be reversed, opposes transgender rights legislation, and calls for ‘religious freedom’ laws to permit anti-LGBT discrimination.

Elizabeth Warren, a fiercely liberal Democratic Senator from Massachusetts, laid into the platform on Twitter.

She wrote: “The GOP platform says overturn marriage equality & it supports parents putting their LGBT children through conversion therapy. Disgusting.

“The GOP platform even says that children not from “natural marriage” are more likely to be drug addicts. Hateful AND disgusting.”

She also laid into Presidential hopeful Donald Trump’s pick for VP, Indiana Governor Mike Pence.

Pence is known for enacting an anti-LGBT religious freedom law that cost his state millions in investments.

Warren fumed: “OF COURSE Donald Trump – a guy who “[doesn’t] feel good” about marriage equality – picked a VP famous for LGBT discrimination.

“Terrifying to think of Mike Pence being a heartbeat from presidency – but the direction GOP wants to take our country is MORE terrifying.”