Sam's Club consolidates membership structure, offers free shipping

(Reuters) - Warehouse chain Sam’s Club, a unit of Walmart Inc, said on Wednesday it will consolidate its membership structure for customers and improve its e-commerce offerings by adding free shipping and opening more e-commerce warehouses this year. The company last month shut 63 stores, or about 1/10th of its total, and laid off nearly 10,000 workers after a review of profitability. The layof...