An occasional writer for lewrockwell.com and Campaign for Liberty, he is one of the four founders of the Foundation to End Drug Unfairness Polices (FED-UP), an anti-drug war organization that sponsors speeches by Jack Herer, Ed Rosenthal, Judge Jim Gray, Valerie Corral, and Lynnette Shaw, and provided support to medical marijuana clinics.
It also launched the Pro Libertate e-zine, where Grigg brought in writers such as James Bovard and fellow LewRockwell.com columnist Scott Horton.