FDR's threat to pack the Supreme Court, which most think he would have carried out, caused the Court to roll over and become a rubber stamp on his programs. As a result, in 1942, the Supreme Court ruled that under New Deal legislation the government could prohibit an Ohio farmer from growing wheat solely for his own family's consumption under the Commerce Clause power. There is a direct path to the later approval of Obamacare.
Of course, there were times when Roosevelt didn't bother to get permission from the courts, like when he seized Montgomery Ward.
Roosevelt was a great war leader, but his domestic programs were a disaster. The economy in 1938 was no better than in 1932.
Our troops in the Pacific will soon be supported by special reefer barges that will produce mass quantities of ice cream and provide fresh fruits and vegetables. The Japanese were up against a massive logistics machine that could even produce luxuries for the troops unheard of in past wars.
Reminds me of the scene in that god-awful Battle of the Bulge movie when the German officer spots a cake in a American CP and realizes they can't match the American logistics machine.
To put it another way, internationally FDR protected America’s freedom while domestically he made direct attacks on America’s only legal bulwark of freedom against tyranny, the Constitution. (GWB the same IMO.)