I mean, the US and UK were both supplying and arming Nazis all the way up to the war, and many such companies continued to do so even while their countries were at war with them.
Ford was building military vehicles for them all throughout the war through a subsidiary using Russian slaves, then after the war concluded Ford sued the US government for damages to its German war factories and won.
GM also build war machines for the Third Reich.
Several banks including JP Morgan were financing the Nazis throughout the war as well.
Nestle supplied food.
DOW Chemical supplied "raw materials".
Coca-cola, through Fanta, supplied sugar and sugary drinks.
Woolworth sold... well a lot of things since they are a retail chain. When discovery of the Nazi concentration camps became public a lot of US citizens protested against Woolworth to have them remove their stores from Germany. Woolworth's response? Fire all their Jewish workers.
MGM provided film services. Kodak sold the Nazis photo equipment.
GE worked very closely with Krupp in order to help build the Nazi gas chambers using Jewish slave labor to build them.
Alcoa sold the Nazis aluminum and had a global monopoly on it.
IBM owned subsidiary Dehomag, a company which provided key services in tracking "undesirables" and their families.
Shell, a UK oil company, produced oil products in Hamburg and Geilenburgh. Standard Oil also provided massive quantities of petrol products.
Random House Publishing and their parent company, Bertelsmann A.G., published Nazi propaganda, including a book called Sterilization and Euthanasia: A Contribution to Applied Christian Ethics.
It's not a "thorny issue". It's plain as day that the Ukrainian military and government is stocked to the gills with Nazis and the US is not only fine with that, they actively encouraged it in the first place.
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