What's up with Wal-Mart's US sales slump?

What's up with Wal-Mart's US sales slump?

Wal-Mart, stung by an embarrassingly long sales slump, is finally ready to do something about it. On Monday, Wal-Mart announced it is bringing back thousands of products that were unceremoniously dumped from stores, saying it is ready to roll up its sleeves to win the lowest-price battle with its rivals.