Sure we do. Just because some corrupt sh!t-hole country wants to have the U.S. protect it from its neighbors, it doesn’t mean it’s a good idea for the U.S. to sign on to that arrangement.
What is at stake in the Ukraine is Nato membership. Because with membership comes ‘standardization’ and lucrative weapons deals. If the Ukraine joins NATO, their tanks become German and their aircraft become American. This is the game that has played out all over central & eastern Europe since 1990. The Russians are belatedly drawing a line with the Ukraine & Finland.