20 attorneys general sue in ongoing battle over proposed mail slowdown

• "The Plan reflects multiple unprecedented changes in the Postal Service’s operations and service, at a time when reliance on the mail remains at historic levels," the attorneys general said in a statement.

The big picture: The suit alleges that the PRC did not give an advisory opinion for most of DeJoy's plan.

• "The Postal Service has only submitted two requests for an advisory opinion [from the PRC], which represent only a small portion of the Plan's scope," the suit alleges.

Flashback: A PRC report released in July said that the Postal Service did not prove "its case for reducing service standards for all Americans."

• "The plan also fails to provide sufficient evidence to justify exceptionally limited cost savings projections," PRC Commissioner Ashley Poling wrote.

• The slowdown went ahead despite the PRC's report and began Oct. 1.

What they're saying: The PRC said it received the lawsuit and plans to establish a docket and take it under advisement, per CBS News.

• The USPS told CBS News that the lawsuit "has no legal or factual merit, and the Postal Service intends to move to dismiss it pursuant to the rules of the Postal Regulatory Commission."