A simmering feud between Reps. Cory Mills (R-Fla.) and Nancy Mace (R-S.C.) has roared back up to a boil, escalating to tit-for-tat threats of expulsion as each lawmaker publicly lobs attacks on the other’s character. Mace on Monday filed a resolution to expel Mills, citing allegations of dating violence and campaign finance laws — a move that comes amid renewed scrutiny of sexual misconduct by House members after Reps. Eric Swalwell (D-Calif.) and Tony Gonzales (R-Texas) resigned last week. “Cory, your days are numbered. Start packing,” Mace said in a statement announcing the expulsion resolution.But Mills is pointing the finger...