After taking a shellacking last year in the blockbuster Citizens United decision, campaign finance reformers are steeling themselves for imminent challenges in the U.S. Supreme Court, Congress and the states.

The justices on March 28 will hear arguments in a double-barreled challenge to Arizona’s Citizens Clean Elections law, their first major campaign finance challenge since the 2010 decision in Citizens United v. FEC. Across the street from the high court, the Senate has pending a House measure approved last month ending the public-financing program for presidential elections.