Ukrainians and Eastern Europeans and their descenents make up a substantial portion of many congressional districts in the Midwest & Northeast, held by both Republicans and Democrats. Cutting off aid to Ukraine might not be the best political move for the GOP.

https://www.dailykos.com/stories/2023/2/24/2154012/-Slava-Ukraina-A-Republican-vote-to-defund-Ukraine-would-come-at-their-own-peril