The american ethno-nationalists seem kind of divided on the issues of whether Jewish people count as proper white folks or as "the other". Of course, budding fascists with an appreciation for their own ideology's history know that Jews are not to be tolerated, but some are starting to see that as outdated and are willing to treat Jews as just other white people. Especially when you have extremely right wing Jews, like Miller, doing such productive work for the nationalists.
The original European understanding of ethno-nationalism isn't really a perfect fit for the US. Many nationalists here don't bother differentiating between the various stocks of white Europeans the way a proper German Nazi might have, but rather just paint the lines as Western whites vs. everyone else. The trope of the scheming, cosmopolitan Jew is hard to shake, but there is growing acceptance under the American nationalist umbrella.
In a lot of ways, Israel is admired. It's a highly militarized nation with a vibrant far-right political party in control with aspirations of becoming an ethnostate.
We are a multi-cultural nation, so the ethnostate people can play a lot more rounds of "WE will be better off without THEM" before they inevitably get to Jews.
Hispanics are popular targets now, but it wouldn't take much to make it Muslims again. Then there are gays and black people. Anti-Semitism is kinda frowned on except by the hardcore haters, as it reminds normal people of the Nazis and gives the game away early...