About 2 years ago I heard that the IRS (illegal entity, see link below) . About 6 months ago I decided to see for myself and went to the local office. The doors are locked. A guard told me it's by appointment only. A couple days ago I drove a friend out there. Same issue. When he asked the guard the reply was, you don't want to know.
If you really want to get MAD:The Internal Revenue Service, a Private Corporation https://famguardian.org/TaxFreedom/Evidence/OrgAndDuties/IRSPrivateCorp-20070630.pdf
If you really want to get MAD:The Internal Revenue Service, a Private Corporation https://famguardian.org/TaxFreedom/Evidence/OrgAndDuties/IRSPrivateCorp-20070630.pdf