Why did Japan not invade the US?

Answer 1

The Japanese war strategy was never to invade or conquer the United States, but to defeat America militarily so that it would not pose a threat to Japanese expansion in China and Southeast Asia. Japan wanted hegemony over the Pacific (a national aspiration emboldened by the Russo-Japanese War), and the United States was the only other major regional power (projecting its power from the Philippines and a series of Pacific islands including Hawaii). Pearl Harbor was timed to run concurrently with assaults on other American Pacific outposts like Wake Island and Guam, followed by a massive invasion of the Philippines. These actions were intended to completely remove American military projection from the Pacific theater and break American resolve to wage a lengthy and bloody war. However, it pretty much had the opposite effect.

Answer 2

Fuel. Japanese ships did not refuel from tankers at sea, as did American ships, and this reduced their operational radius. Without mid-ocean refueling the IJN stretched itself to strike at Hawaii, and an attack on the US mainland would have been out of the question.

Answer 3

We didn't invade Japan because they predicted 500,000 American casualties. The perfection of the Atomic Bomb, made invasion unnecessary.

Answer 4

Because the War in Asia Was harder than they thought and the US army overan any offenses Japan sent