https://www.nytimes.com/2019/05/27/us/p ... ntrol.html
A couple of weeks ago, the New York Police Department held an unusual public hearing. Its purpose was to make a Supreme Court case disappear.
In January, the court agreed to hear a Second Amendment challenge to a New York City gun regulation. The city, fearing a loss that would endanger gun control laws across the nation, responded by moving to change the regulation. The idea was to make the case moot.
Until the Supreme Court agreed to hear the dispute, the city had defended the regulation vigorously and successfully, winning in two lower courts.