I suppose a new development is that Trump is more in the mold of a European right-winger. Up until now, the American right hasn't resembled the nationalist movements of Europe that much. It was more (and I'd argue still is in large portion) an ideological identity (Burkean, small government, traditional values, etc.), not a nationalist one.

My country didn't have extreme right party in government since after USSR. The most right party is a run-of-a-mill conservative party which in most cases would agree to US Democrats of 5 or 10 years ago. Anything right of that is marginalised forever and didn't even have a seat for over a decade. Yet several Western Euro countries had their extreme-ish right in government coalitions or nearly winning presidential elections.