Franklin Roosevelt actually said...

"I, Franklin Delano Roosevelt, do hereby appoint as a Military Commission the following persons:"

"Only officers and employees of the Government of the United States possessing special scientific or other technical or professional qualifications shall be assigned under the said act."

"All officers and employees detailed pursuant to the provisions of the said act shall receive from the department or agency in which they are employed reimbursement for travel expenses to and from the ..."

"such persons shall not be privileged to seek any remedy or maintain any proceeding in the courts of the United States"