49 U.S.C. § 114(l) Regulations.--
(1) In general.--The Under Secretary [TSA Administrator] is authorized to issue, rescind, and revise such regulations as are necessary to carry out the functions of the Administration.
(2) * * *
(3) (3) Factors to consider.--In determining whether to issue, rescind, or revise a regulation under this section, the Under Secretary shall consider, as a factor in the final determination, whether the costs of the regulation are excessive in relation to the enhancement of security the regulation will provide. The Under Secretary may waive requirements for an analysis that estimates the number of lives that will be saved by the regulation and the monetary value of such lives if the Under Secretary determines that it is not feasible to make such an estimate.
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(q) Law enforcement powers.--
(1) In general.--The Under Secretary may designate an employee of the Transportation Security Administration or other Federal agency to serve as a law enforcement officer.
(2) Powers.--While engaged in official duties of the Administration as required to fulfill the responsibilities under this section, a law enforcement officer designated under paragraph (1) may--
(A) carry a firearm;
(B) make an arrest without a warrant for any offense against the United States committed in the presence of the officer, or for any felony cognizable under the laws of the United States if the officer has probable cause to believe that the person to be arrested has committed or is committing the felony; and
(C) seek and execute warrants for arrest or seizure of evidence issued under the authority of the United States upon probable cause that a violation has been committed.