As expected, the Securities and Exchange Commission’s five commissioners voted unanimously to publish its long-awaited Concept Release on the U.S. Proxy System.

The so-called “proxy plumbing” concept release, which is expected to include a 90-day comment period when published, is part of the first comprehensive SEC review of the infrastructure of the U.S. proxy voting system in nearly 30 years. [Update: the 151-page Concept Release has been posted to the SEC Web site].