Isoroku Yamamoto was the leader of the attack on pearl harbor, the suprise attack on pearl harbor caused many people to rethink of how they though about Japanese Americans freely living in America. Many Americans became paranoid in the thought that there fellow americans were spying on them,causing the president to order all Japanese to leave there homes and stay in the well known Japanese internment camps. Yamamotos many other attacks on U.S. forces also renforced Americans uneasiness for Japanese in there country.