Why is liberal Seattle appealing to the conservative U.S. Supreme Court over homeless camp sweeps?

The city of Seattle, the liberal paradise of legal weed and autonomous zones, is asking for help from the most conservative U.S. Supreme Court in almost a century. Seattle joined a dozen other cities, including Tacoma and Spokane, to ask the justices to overturn two Ninth Circuit Court rulings that restrict when they can sweep homeless encampments, known as Grants Pass v. Johnson and Martin v. Boise.