Weeks after the Roman Catholic archdiocese of New Orleans was identified as the subject of a child sex-trafficking investigation, the Louisiana state supreme court has agreed to reconsider its decision to strike down a law that had allowed victims to file civil lawsuits over long-ago abuse. Five of the court’s justices voted in favor of rehearing a case that produced a 4-3 ruling in March, dismaying survivors of the state’s decades-old clergy abuse scandal. The judges voting for a rare rehearing were chief justice John Weimer – who suggested a hearing before the end of May – and associate justices...