Supreme Court welcomes the public again, and a new justice

The Supreme Court began its new term Monday with a new justice on the bench, the public back in the courtroom and a spirited debate in a case that pits environmental protections against property rights.

The new member of the court, Justice Ketanji Brown Jackson, wasted no time joining the lively give-and-take, asking questions throughout nearly two hours of arguments in the dispute over the nation’s main anti-water pollution law, the Clean Water Act.

Jackson, appointed by President Joe Biden, seemed to be generally aligned with the court’s other two liberal justices in...