6 U.S.C. § 469: Fees for credentialing and background investigations in transportation

such fees, in the aggregate, shall not exceed the costs incurred by the Department of Homeland Security associated with providing the credential or performing the background record checks; the Secretary shall charge fees in amounts that are reasonably related to the costs of providing services in connection with the activity or item for which the fee is charged; a fee may not be collected except to the extent such fee will be expended to pay for the costs of conducting or obtaining a criminal history record check and a review of available law enforcement databases and commercial databases and records of other governmental and international agencies; reviewing and adjudicating requests for waiver and appeals of agency decisions with respect to providing the credential, performing the background record check, and denying requests for waiver and appeals; and any other costs related to providing the credential or performing the background record check; and any fee collected shall be available for expenditure only to pay the costs incurred in providing services in connection with the activity or item for which the fee is charged and shall remain available until expended. Notwithstanding section 44939(e) of title 49 , the Secretary shall establish a process to ensure that an alien (as defined in section 101(a)(3) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(3) ) applying for recurrent training in the operation of any aircraft is properly identified and has not, since the time of any prior threat assessment conducted pursuant to section 44939(a) of such title, become a risk to aviation or national security. If the Secretary determines, in carrying out the process established under paragraph (1), that an alien is a present risk to aviation or national security, the Secretary shall immediately notify the person providing the training of the determination and that person shall not provide the training or if such training has commenced that person shall immediately terminate the training. The Secretary may charge reasonable fees under subsection (a) for providing credentialing and background investigations for aliens in connection with the process for recurrent training established under paragraph (1). Such fees shall be promulgated by notice in the Federal Register.