Pennsylvania’s highest court said today that it will hear arguments on the constitutionality of the state’s expansive 2-year-old mail-in voting law, whose fate is in doubt after a lower court ruled the law violates the state constitution. The state Supreme Court said it will hear oral arguments at its March 8 session in Harrisburg. Written briefs are due before then. The mail-in voting law which allows no-excuse mail-in voting by any registered voter, remains in force while the state Supreme Court hears the appeal by Gov. Tom Wolf’s administration.