The Supreme Court on Friday ruled that the right to a trial by jury and to due process apply to people who face a steep sentencing enhancement under federal law, in a ruling that transfers some power from the hands of judges to the public and will affect many criminal defendants’ future punishments. The procedural history of the case is a bit of a whirlwind. But at its center is Paul Erlinger, who was charged in 2017 with being a felon in possession of a firearm and sentenced to 15 years under the Armed Career Criminal Act (ACCA), which increases the punishment for that offense—felon in posses…