The Transportation Security Administration is looking into an incident at Dulles International Airport in which Sen. David Vitter (R-La.) entered a closed door, setting off an alarm, Hotline reported late Wednesday.The incident, first reported by Roll Call, happened last Thursday. Vitter arrived at his gate about 20 minutes before takeoff, found the door closed and opened it, tripping the alarm, a witness told Roll Call. The witness said that Vitter grew heated during an exchange with an airline worker and that when the worker left to call security, Vitter left the scene.“We will be reviewing the alleged incident,— TSA spokeswoman Lauren Gaches told Hotline.Vitter’s spokesman did not respond to Roll Call’s request for comment, but Vitter told the New Orleans Times-Picayune that he “accidentally went through a wrong door at the gate.—Hotline notes that TSA policy, which may apply in this case, calls for a $2,500-$6,000 fine for “tampering or interfering with, compromising, modifying, attempting to circumvent, or causing a person to tamper or interfere with, compromise, modify or attempt to circumvent any security system, measure, or procedure.—Hotline also reports that a $1,000-$3,000 fine could be levied for “entering or being present within a secured area, AOA (Airport Operations Area), SIDA (Security Identification Display Area), or sterile area without complying with the systems measures or procedures being applied to control access to, or presence or movement in, such areas.—