Strategies will continue to evolve until the United States implements some version of immigration reform. The case certainly reminds every restaurant to regularly review their hiring procedures:

• All i9s are current form and filled out correctly and completely for every employee.
• Accessible binder for all current employee i9s (otherwise have to show employee files to ICE agents which may not be in your interest).
• Inform all managers of procedures if ICE walks in.
• If received, review non-matching notification from Social security Administration in detail.
• Consider meeting with each employee listed in notification to review proper documentation.
• Consider E Verify program (not currently required by law).