Wal-Mart Stores Inc, already struggling to woo shoppers constrained by higher taxes, is "getting worse" at keeping shelves stocked, the retailer’s U.S. chief told executives, according to minutes of an officers’ meeting obtained by Bloomberg News.

"We run out quickly and the new stuff doesn’t come in," U.S. chief executive officer Bill Simon said, according to the minutes of the Feb. 1 meeting. Simon said "self-inflicted wounds" were Wal-Mart’s "biggest risk" and that an executive vice president had been appointed to fix the restocking problem, according to the minutes.