Such investigations aim to stifle speech and chill the questioning of those in power. They’re an acute danger to non-profit organizations that Americans rely on for critical information. That’s why 17 non-profit organizations, led by the Intercept’s Press Freedom Defense Fund, filed an amicus brief in the United States court of appeals for the DC circuit. The brief, authored by Albert Sellars LLP, asks the appellate court to uphold a preliminary injunction to protect Media Matters speech rights. (The Guardian has signed a similar brief in the case.)