The Speak Free Act of 2015 is a federal anti-SLAPP bill introduced in the House of Representatives on a bipartisan basis by Reps Anna Eshoo and texas republican Blake Farenthold.
SLAPP stands for Strategic Lawsuits Against Public Participation and describe lawsuits filed primarily to discourage, harass and intimidate public participation and free speech.
Anti-SLAPP laws provide a way for those targeted via SLAPP suits get the suits dismissed fairly rapidly and avoid being drained by long and resource-consuming lawsuits designed not to prevail on the merits, but to exhaust the target into silencing themselves to get out from under the lawsuit.