I think a few here is fond of the old Franklin Delano Roosevelt, but looking into the actions that he did during the years into the prelude of World War 2 was really interesting. At his behest, he supplied Joseph Stalin and the whole Soviet Union of military equipment and intelligence to prepare for the Nazis. I really don't think that Americans during at the time was on board with supplying another enemy, the communists, with their own handmade products just to hold off the Reich.
Let's not get started with the internment camps he did against Americans of Japanese lineage after the Pearl Harbor attacks, how the Democrats were tight-lipped about it to this day, and the communist project that the former First Lady, Eleanor Roosevelt did in Arthurdale, Virginia, that was still left untold on how many people died due to starvation on that god forsaken experiment of hers.
He didn't supply Russia before WW2, that was done after Pearl Harbour.
He did supply Britain with all sorts of goods before the US got involved, he got the USN and USAAF to hunt U-boats near the shores of the US and Iceland and there was Lend/Lease, which was on terms suitable to the USA.
I agree about Eleanor, she was a communist and cheated on FDR quite a few times, mostly with US Marine Corp officers