"The United States has already exercised its own exclusive authority to resolve war, including claims arising out of it," the judges ruled.

The Constitution "allocates the power over foreign affairs to the federal government exclusively, and the power to make and resolve war, including the authority to resolve war claims, is central to the foreign affairs power in the constitutional design," they wrote.

In light of this, the judges wrote the "states are prohibited from exercising foreign affairs powers, including modifying the federal government's resolution of war-related disputes."

The plaintiffs will either protest the appeals court's decision or appeal to the U.S. Supreme Court.

The appeals court also dismissed the claims by South Korean and Chinese nationals on their World War II slave labor. Although they are not affected by the Treaty of Peace signed in 1951 between Japan and the Allied powers in San Francisco, their claims relied again on the statute.

In 2001, federal district courts have dismissed claims by plaintiffs for damages for past wartime wrongs, citing the Treaty of Peace. (Kyodo News)

Article courtesy of Japan Today: http://www.japantoday.com