[BroJoeK]

eagleone: "IF, as you assert, FDR wanted to defeat the Germans he could have asked for a Declaration of War in 1939 when the British and French declared war on Germany....IF he wanted to defeat the Germans."

By 1939 nearly all Americans felt burned and deceived by the First World War and wanted no part of another.
Polls taken in September 1939 and early 1940 showed upwards of 90% of Americans opposed declaring war against Germany.
As late as the summer of 1941 around 80% of Americans still opposed going to war.
So FDR did not ask Congress for a declaration of war then, only for what most all Americans did agree to -- supplying weapons to our allies.

eagleone: "btw...what is the source for your employment figures?"

From here.
The unemployment numbers are not as rosy, but by 1940 & 1941, they are moving steeply in the right direction:

[ealgeone]

Your graph disproves your assertion the economy was rebounding and would have done so without the war. We would not have spent the money on lend lease as we did full scale war.