On April 15, the Institute for Justice (IJ) filed a lawsuit on behalf of two volunteer groups challenging part of Washington State's grassroots lobbying disclosure law as a violation of their First Amendment rights to free speech, assembly, and petition. In Many Cultures, One Message v. Clements, the groups claim that having to register as grassroots lobbying organizations is burdensome, and revealing information about their financial supporters could leave donors open to threats from opponents.