Also note that you may be able to file amended returns as far back as the IRS allows to collect back taxes you paid as well. But be cautious with this as it may trigger an audit.
The ProSe action listed might be an adequate defense against the IRS if they audit you, and it may turn out that this is the way get standing to take them down (i.e. bait them into taking audit action, so you can sue them ProSe in Fed District Court and shut them down).
Also note that you may be able to file amended returns as far back as the IRS allows to collect back taxes you paid as well. But be cautious with this as it may trigger an audit.
The ProSe action listed might be an adequate defense against the IRS if they audit you, and it may turn out that this is the way get standing to take them down (i.e. bait them into taking audit action, so you can sue them ProSe in Fed District Court and shut them down).
Disclaimer: Not financial or legal advice.