The Health and Human Services (HHS) was reviewing federal statutes which concerned limits to relations, and benefits received by doctor from drug companies. The purpose of the public comment process , is to give the public such as doctors, drug companies, patients etc. a chance to voice their views on their concerns.
Doctors have a duty to provide the most efficient care to their patients. However, the type of care may be affected by perks they received from drug companies, which may negatively affect patient outcome.
The Open Meeting Act of that state which limit public access may be preempted by Federal Open Meeting Law which allows public access to agency meetings. Hence, an agency can't deny public access for no good reason, especially as in this case a home owner association has legitimate interest on the local zoning.
The Federal Register is a publication that lists agencies proposed rules, final rules, changes, meetings, as well as presidential proclamations and executive orders. The register affects rulemaking of agencies by letting the public be informed and giving them an opportunity to make comments and be aware of rules. The current register can be found online at http://www.archives.gov/federal-register/
The Code of Federal Regulations list the general and permanent rules made by agencies. The differences in the two is that the register is frequently updated, whereas the code is finalized.