Could be true. There is something to be said for helping out the Ukes until Trump comes back.
Domestically, congressional Republicans have to worry about what the public will think of them if Ukraine falls. Internationally, they do not want to get blamed for emboldening future Russian aggression.
Assuming Trump wins (Democrats fail to steal the Presidency again), the better Ukraine's position, the better Trump's negotiating position with both sides.
And then we impeach him again before he can fix it and then maybe we can elect another neocon.
History will record the US involvement in this war as the beginning of our historic decline. Spending hundreds of billions of $$$ to protect Ukie borders while our own borders collapsed.