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... On Friday, President Trump signed an executive order telling the FAA to lift its 52-year ban on supersonic flight over the US and told the FAA to devise a scheme to limit noise pollution from such aircraft.

Supersonic flight has been banned over the US for civilian aircraft since 1973 after testing showed the noise it created was too disruptive, breaking windows in some cases. Since then, NASA and private startups have developed ways to reduce the sound of sonic booms from faster-than-Mach 1 flight, and there's currently legislation before Congress to allow these high-tech aircraft to fly over the US, potentially halving the flight time between New York and Los Angeles.

Now the president has issued an order that does basically what the legislation, sponsored by four Republican senators, asked for.

The FAA has also been instructed to devise a system to regulate such aircraft's noise levels in conjunction with "community acceptability, economic reasonableness, and technological feasibility," to allow flights over the homeland. ...