Nah, it was President Roosevelt who put in place the Wage and Price Controls that got us on the employer-provided health insurance bandwagon.
And even if I were inclined to blame the enemy for what was a purely internal issue, I'd blame the Japs - they were the ones who attacked us officially*.
*: While it is true that the proximate cause of our entry into WW2 was the Japanese attack on Pearl Harbor, the Germans were the first to actually attack the US Navy, sinking the USS Reuben James a month or so before Pearl Harbor. But we let that slide, because we weren't ready for a war just then, and it was low enough profile that we could safely pretend it wasn't an act of war.
Just as we pretended that using the US Navy to protect convoys to a belligerent wasn't an act of war, in and of itself.