U.S. Vice President JD Vance faced growing backlash on Saturday after scolding the European political establishment for shunning far-right parties and subsequently meeting with the leader of the neo-Nazi Alternative for Germany, just a week ahead of the country’s general election.

While Vance did not explicitly mention Alternative for Germany, or AfD, during his remarks Friday at the Munich Security Conference, he declared that “there is no room for firewalls”—a reference to mainstream German political parties’ refusal to work with AfD or include it in governing coalitions.

The Guardianreported that “a whisper of ‘Jesus Christ’ and the squirming in chairs could be heard in an overflow room” during the U.S. vice president’s remarks, which he delivered a week after hundreds of thousands took to the streets of Munich to protest far-right extremism.

Following his speech, Vance met with AfD leader Alice Weidel, who praised the vice president’s Munich address as “excellent” in a post on X—a social media platform owned by billionaire Elon Musk, who has also expressed support for AfD as he works to dismantle agencies throughout the U.S. government.

Reutersreported that Weidel—whose grandfather was a Nazi judge appointed directly by Adolf Hitler—met with Vance at his hotel “for about 30 minutes and discussed the Ukraine war, German domestic policy, and freedom of speech.”

Vance was the highest-ranking U.S. official to ever meet with the leader of the AfD, which is seen as the most extreme of Europe’s far-right parties.

On Saturday, German Chancellor Olaf Scholz rebuked Vance and said that “we will not accept outsiders intervening in our democracy,” even “friends and allies.”

“Never again fascism, never again racism, never again aggressive war,” Scholz said in his speech at the Munich Security Conference. “That is why an overwhelming majority in our country opposes anyone who glorifies or justifies criminal National Socialism.”

“A commitment to ‘never again’ is not reconcilable with support for the AfD,” said Scholz.