This past Friday, President Obama signed a massive tax and spending bill into law. Included among the bill's 2,009 pages is a provision that will be welcomed by medical marijuana patients and providers around the country – an amendment preventing the Department of Justice (DOJ) from interfering with states that have enacted medical marijuana laws. The amendment, authored by Reps. Dana Rohrabacher, R-CA, and Sam Farr, D-CA, extends the protection offered by a similar provisio