Try to get a free consultation with any employment attorney. See what he says and then decided on your path. I was told most wrongful termination cases will not fly.
Only discrimination cases have a chance. One of the post below is right. You must first fill an action with the EEOC and the EEOC mediates.
Then if no settlement the EEOC gives you a written statement that you have the right to sue. I plan on bringing an age discrimination case. But the only reason I am going to try is: I had no PIP and I was in good standing with no lower L performance reviews,