Wal-Mart will certainly have reputation management and FCPA regulatory issues to handle in the U.S. as well as internationally but it is unlikely the Mexico crisis will affect consumer buying or even much of the mega corporation’s bottom line depending on the management shake-up that follows the revelations.
This is not like News Corporation’s struggles, for instance, that ended with the closing of an iconic business division and key members of the management team being fired at the home market.
Wal-Mart will inevitably spend millions of dollars on reputational repairs and union redress or employee law suits may take advantage of this perceived weakness. The corporation must be extra sensitive to public scrutiny moving forward and make sure its operations are squeaky clean at other international locations. They would do well to report problems (and proposed solutions to them) now before they are discovered by outside sources, like regulators or the news media.