The executive board of the Arizona Democratic Party has voted to censure party member Sen. Kyrsten Sinema over her decision to vote with Senate Republicans not to change the chamber’s filibuster rules.

Those rules generally require 60 votes to advance most legislation in the Senate. That policy has effectively allowed Republicans to block Democratic legislation in the Senate, most lately Democrats’ efforts to overhaul U.S. voting laws.

Following Sinema’s refusal to change that rule, the executive board slammed the filibuster as an “archaic legislative norm” and announced a formal rebuke of Sinema herself.