may waive the requirements of subsection (a) with respect to any individual covered by such subsection if the Director certifies, in writing, to the Committee on Oversight and Government Reform of the House of Representatives, the Committee on Homeland Security and Governmental Affairs of the Senate, and the appropriate congressional committees of jurisdiction, that it is in the public interest to grant the waiver. (2) For purposes of carrying out paragraph (1)— (A) the public interest includes exigent circumstances relating to public health, public safety, or national security