I've spent a fair bit of time in Boise, as I have family there. The truth is more complicated than a word. The "city" is friendly in terms of favorable policies; the people who live there aren't uniformly friendly to immigrants. In the late 90s, my cousin was upset that his high school banned (iirc) jackboots and cuffed jeans, until he learned that the style he'd unwittingly adopted was equivalent to skinhead gang colors; the ban was a result of actual skinheads popularizing the style. Then, last June, the literal nazis marching downtown. Granted, it's much worse in Coeur D'Alene.