WASHINGTON — Nick Fuentes, the leader of a white nationalist group, was bemoaning the political persecution he said he was facing from the federal government when he paused during a recent livestream to praise one of his few defenders.
“There is some hope, maybe, for America First in Congress,” Mr. Fuentes said, referring to the name of his movement, a group that aims to preserve white, Christian identity and culture. “And that is thanks to — almost exclusively — to Representative Paul Gosar.”
Mr. Gosar, a five-term Republican and dentist from Prescott, Ariz., emerged this year as a vociferous backer of the “Stop the Steal” movement that falsely claimed that former President Donald J. Trump won the 2020 election and spearheaded the rally in Washington on Jan. 6 that led to the deadly Capitol riot.
But Mr. Gosar’s ties to racists like Mr. Fuentes and America First, as well as similar far-right fringe organizations and activists, have…