130px-Seal of the United States Congress.svgU.S. regulators should begin closing some air-traffic facilities during slow periods late at night, the chairman of the House aviation subcommittee said.

 Representative Tom Petri, a Wisconsin Republican, said in an interview yesterday that fellow members of Congress — who have at times blocked cost-saving efforts — need to let the Federal Aviation Administration shut underutilized air-control towers and radar rooms.

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