The far right in both Europe and the US have definitely been courting groups like the Kahanists:
"Le Pen has already managed to forge ties with the Kahanists in France, members of the Jewish Defense League, who consider the leaders of the community 'traitors who deserve to die.'"
http://www.haaretz.com/weekend/week-s-end/the-daughter-as-de-demonizer-1.335743
And below, an article on Glenn Beck's recent visit to the Knesset:
http://972mag.com/glenn-beck-at-knesset/