Senate Minority Leader Charles Schumer (right) has said that Democrats will try to block Donald Trump’s choice of undersecretary for research, education and economics at the Department of Agriculture if the President doesn’t withdraw his nomination.

Schumer and Senator Brian Schatz (D-Hawaii) said yesterday that Trump’s nomination of Sam Clovis (above) sends a “clear as day message to the world that this administration continues to tolerate hate.”

Clovis is a climate change denier. He has said that Barack Obama wanted to “enslave” his opponents and that former president was happy after the 2012 terrorist attacks in Benghazi, Libya. In 2011, he called progressives “liars, race traders, and race ‘traitors.’” He also said that same-sex marriage could lead to legalized pedophilia.

In a joint statement, Schatz and Schumer said:

“President Trump should withdraw the Clovis nomination immediately — not only because he is a proud ‘skeptic’ of climate change and wildly unqualified…but also as a gesture to the American people that this administration is serious about rooting out the most hateful voices in our society.

“The extremist views Mr. Clovis has expressed and the racist conspiracy theories he has stoked about President Obama, former Attorney General Eric Holder, members of the LGBT community and others have zero place in the public discourse, much less coming from the highest levels of our government,” Schumer and Schatz said in their statement.”

According to the Hill, the Senators added that if Trump refuses to drop the nomination, Democrats “will vehemently oppose his nomination and urge our colleagues from both parties to come together and summarily reject him as well.”

However, Democrats would require three GOP senators to vote against Clovis in order to block his appointment.

Watch a report on Clovis’s comments on homosexuality below.