Minutes before midnight on December 12, 2016, Citizens Union (CU) filed a complaint against the State of New York alleging a violation of the First Amendment of the United States Constitution. CU seeks declaratory and injunctive relief from disclosure laws passed in June.

The new laws lowered the annual lobbying spending threshold from $50,000 to $15,000 for 501(c)4 organizations. Additionally, the new laws require 501(c)4 organizations to disclose donors who give more than $2,500. The complaint was filed in the United States District Court for the Southern District of New York.