Nov. 20—Virginia-based LL Flooring Holdings is closing its Lumber Liquidators stores nationwide after filing for protection from creditors in U.S. Bankruptcy Court for the District of Delaware in August. That includes four stores in Washington — Kennewick, Seattle, Tukwila and Shoreline — and four in Oregon. LL Stores filed under Chapter 11, listing assets between $500 million and $1 billion, ...