Germany wouldn't try to attack America on home field, at first. Opposing forces would've crippled them or at least spit in their eye, they would've waited a few years.
WWII wouldn't have happened the way we know it today, but after Germany licked it's wounds, it would start assaults on the Americas and Canada.
After a few years of tug and pull, America would fall due to a lack of resources, and Germany and it's allies would become the omni government of the world.
Hitler quite possible would've come into power, because revenge for the loss of WWI was only a secondary goal.
One domino falls after another and Jews and Blacks are wiped off and the world becomes a drastically changed, stable, yet un-diversified place.
A writer spills his soul on paper. What happens when the pencil breaks?