In 2015, Attorney General Bob Ferguson's office filed suit against the Freedom Foundation claiming violations of the state campaign-finance laws regarding the organization's opposition to Initiative 1501, a statewide ballot measure. The complaint was initiated by the SEIU, which organized the campaign promoting the initiative. After an initial win for Freedom Foundation in the superior court, the Washington Supreme Court found in favor of the Attorney General in a split 5-4 decision. The Foundation has appealed the decision to the U.S. Supreme Court.