These entities are typically tasked to interpret and issue final guidelines on all federal regulations

Department of Labor
http://www.dol.gov

Department of Health and Human Services
http://www.hhs.gov

Department of Employee Benefit Services Administration
http://www.dol.gov/ebsa

Department of Internal Revenue Service
http://www.irs.gov

Department of Centers for Medicare Services
http://www.cms.gov 

If you have any questions, please contact HNAS at 610.491.5043 or hnasmarketing@hnas.com.