You see, there is a reason, why even such senile dumbass like Biden restricted Ukrainians commit attack against Russia itself. Right now Ukrainians just raised bets from "special military operation" to "counter-terroristic operation" and the members of Kievan Junta significantly decreased their personal chances for survival.
America may be ready to help Ukraine defend itself (while it's a stupid solution), but even Biden won't facilitate them in their attacks against Russia, because it's not just stupid - it's suicidal.