Tenn. Code Ann. § 37-5-207

Authority is given to the department for commitment of children who may be convicted of any offense against the United States in any district court of the United States within the state and sentenced by such court to the department, and to that end, the commissioner may enter into a contract with the attorney general of the United States for their detention, subsistence and proper employment of such juvenile offenders and the rate of compensation to be paid for the use of the institution by the United States.