1. Federal law preempts state law:

A. if state law is valid, then federal law cannot preempt state law

B. if the federal law is constitutional and does not commandeer, then federal law does not preempt state law

C. none of these answers

D. always

2. A doctor prescribing marijuana for medicinal reasons is:

A. is a violation of the CSA and could result in the doctor losing his prescriptions rights granted by the DEA

B. the recommendation exception really only works for very specific diagnosis

C. all of these answers

D. is protected by the first amendment through the recommendation exception carved out by conant v. walters

3. An employer fires an employee for medical marijuana use but allows medical opioid use.State law makes medical marijuana use legal.Employee sues for his job back. The company's best defense may be.

A. state law is an obstacle to congressional intent in the CSA and therefore the state law is invalid

B. none of these answers

C. medical marijuana is not recognized by the federal government as valid

D. the worker was high on the job