No, they wouldn't rise. And no, they will fight back, because Ukraine is more important for their safety than was Cuba for the USA back in 1962.
Let's play a game. The Mexican Junta (backed by Russia and China) want to take back "their" lands (including Texas and California) and , at least, return to the borders of 1821, but their final goal is the "total decolonisation of the Northern America" (which means discrimination, abuse and, later, genocide for all Americans of European, African or Asian origin).
Do you really believe that there could be any circumstances under which US citizens won't fight for their land, their freedom and their lives (if necessary, with the nuclear, chemical and biological weapon)?