Marijuana legalization leads to ethical dilemmas for bar associations and attorneys. Technically because marijuana sale and use is illegal under federal law, an attorney advising a client regarding marijuana businesses is arguably aiding and abetting the perpetuation of a known federal offense. Advising clients on marijuana is one issue. Another is the use of marijuana by attorneys. Is it an ethical violation for a lawyer to commit a federal offense by using marijuana? On the state level bar associations and attorneys are discussing these issues.