Social Security's proposed Rules of Conduct and Standards of Responsibility for Appointed Representatives have already cleared the Office of Management and Budget (OMB). It only took a little over a month. Some change was made in the proposal while it was pending at OMB but we'll probably never know what. The proposed regs should appear in the Federal Register in the near future. Remember, it's just proposed regulations.
By contrast, the final regs that would change the mental impairment Listings are still pending at OMB. They were submitted on May 23.