> as all marijuana trade is criminal under federal law

You may be right because of the word trade; however, the Federal government itself has authorized the growing (University of Mississippi) and interstate distribution of legal marijuana since 1976 through CIND.

Not trying to split hairs, because the total patient list has probably always been under a dozen people, but it is still an interesting fact and one I only know of because I randomly represented one of the Federal patients in a corporate capacity. Each patient dosage is individualized, and the Federal government gives my client 360 joints per month.