Are Wal-Mart's low prices always a good thing for the US?

Are Wal-Mart's low prices always a good thing for the US?

Jordan Goodman (Personal Finance Author) gives expert video advice on: How can Wal-Mart sell so cheap?; What effect does Wal-Mart have on the small businesses?; What effect does Wal-Mart have as a business model? and more...