Former Rep. Rocky Miller, who represented House District 124 from 2013 to 2021, has filed a lawsuit in U.S. District Court for the Western District of Missouri seeking compensatory damages and an injunction to prohibit the Missouri Ethics Commission from enforcing the lobbying ban for legislators.

Miller alleges the 2018 Amendment known as Clean Missouri is an unconstitutional infringement on his rights to freedom of speech and petitioning the government because he was unable to successfully register as a lobbyist to lobby the executive and legislative branches for a prospective client.