FDR’s actual policy towards Jews fleeing Hitler is distorted in the Ken Burns documentary to make it look like FDR gave a rip.
I saw Alan Dershowitz talking this when he was young and I was a child 50 some years ago. FDR would not allow Jews on the St. Louis, a ship that Cuba also refused help to, into the USA.
Some made it to the UK others to Holland, Belgium and France. The latter three conquered by the Nazis.
254 died in the Holocaust.
The movie Ship of Fools was based on this.