California voters rejected marijuana legalization last November, and now a state senator is attempting to pass a piece of the initiative through the legislature.Senate Bill 129 - introduced by Sen. Mark Leno (D- San Francisco) - would restrict employers from firing or refusing to hire employees based on a positive marijuana test if the employee is a medical marijuana user. Employers would still be able to fire employees for using or being under the influence of marijuana on the job, its language states."When Californians approved the compassionate use of cannabis (with Prop 215), they never intended for it to apply …