Because they had to get a certain amount of states to verify the law in order to take action.
The Allies. "<span>The surrender of </span>Imperial Japan<span> was announced on August 15 and formally signed on September 2, 1945, bringing the hostilities of World War II to a close. By the end of July 1945, the Imperial Japanese Navy (IJN) was incapable of conducting major operations and an Allied invasion of Japan was imminent."</span>
From Occupation to Liberation (1940 - 1945) The Channel Islands were the only part of the Britain Isles to be occupied by German forces in WW2