What Would Have Happened if Germany Had Invaded the U.S. During World War II?

Quora

 

. . . "And even if the Germans had landed a sizable force here, how where they going to be resupplied? Any such force would have been trapped here until it was defeated, destroyed, or retreated. The U.S. could play at the U-boat game, and the Germans would have needed open logistics lines to keep themselves supplied. Assuming that they were somehow able to move further inland, they still would need a corridor or corridors open to the ocean for supplies and retreat. Not seeing how that could have happened.

"In addition, everybody had guns. One commonality among the nations conquered by Germany is that private firearms ownership was heavily restricted or simply banned. With no such restrictions here and given the fact that modern combined arms tactics were still in their infancy, it's difficult to see how the Germans would have avoided taking heavy casualties. The Germans would have faced an armed force at least 10 times the size of their invasion force, who were also motivated to ensure that they (the Germans) would lose." . . .