The Employee Handbook at Current Job Says Not to Discuss Wages

Hey all. Just wanted to know if this is something I should report to NLRB. The policy states employees are banned from discussing pay at work, and doing so will result in disciplinary action. This policy is not causing me any issues, as I haven't discussed my pay. That being said, if I can force them to fund my retirement a little early, I'm eager to do so. This is in TN