U.S. Prisoners of War and Civilian American Citizens Captured and Interned by Japan in World War II: The Issue of Compensation by Japan [Updated July 27, 2001] [open pdf - 168KB]
From the Summary: "Of the approximately 130,000 American prisoners of war (POWs) in World War II (WWII), 27,000 or more were held by Japan. Of the approximately 19,000 American civilian internees held in WWII, close to 14,000 were captured and interned by Japan. After the conclusion of WWII, Congress passed the War Claims Act of 1948, which created a War Claims Commission (WCC) to adjudicate claims and pay out small lump-sum compensation payments from a War Claims Fund consisting of seized Japanese, German, and other Axis assets. Payments to POWs held by either Germany or Japan were at the rate of $1 to $2.50 per day of imprisonment. The WCC also paid civilian internees of Japan $60 for each month of internment, and civilians were also eligible for compensation for disability or death. The War Claims Act of 1948 did not authorize compensation for civilian internees held by Germany."
CRS Report for Congress, RL30606