A proposal by Rep. Johnny Olszewski Jr. to impose term limits on U.S. Supreme Court justices is opening a familiar partisan divide, with the Democrat framing it as a needed fix and a Maryland Republican calling it an overreaction to recent rulings. Legislation introduced by the freshman Baltimore County lawmaker would establish 18-year term limits for Supreme Court justices. The measure would reform a system that Olszewski, a former American history and government teacher, says enables justices “to serve for decades without accountability” because they have lifetime appointments. Olszewski’s longshot bill reflects national Democrats’ growing dissatisfaction with a court they see as increasingly partisan and conservative, willing to upend precedent, and out of step with public opinion. The legislation follows a 6—3 ruling last week in which the court limited the Voting Rights Act’s power to enact race-based remedies for maps that marginalize Black voters’ election impact.…