https://www.techdirt.com/articles/20180116/12520539013/22-state-attorneys-general-file-suit-against-fcc-net-neutrality-repeal.shtml

The legal fight over the FCC's historically unpopular decision to kill net neutrality has begun. An announcement by New York Attorney General Eric Schneiderman's office indicates that 22 State Attorneys General have filed suit against the FCC. The AGs says the multi-state coalition has filed a petition for review in the U.S. Court of Appeals for the D.C. Circuit, the first of what's expected to be numerous lawsuits in the weeks and months to come.

The announcement makes it clear the suit intends to focus on the FCC's potential violation of the Administrative Procedure Act. Under the Act the FCC will need to prove that the broadband market changed so substantially since the passage of the original rules in 2015 to warrant such a stark reversal (tip: it didn't). Under the Act, a decision can be declared "arbitrary and capricious" (Ajit Pai's agenda is undeniably both) if the regulator in question can't prove such a dramatic change, which is why you've watched industry lobbyists and their BFF Pai routinely and falsely claim that the modest rules somehow devastated sector investment.