Paralegal Carlos is asked by his supervising attorney to do some research. Carlos is to review a new state statute exempting ill persons certified to use medical marijuana from prosecution. His job to find out what the requirements are for becoming a certified medical marijuana user. Carlos looks up the relevant state statute and finds the requirements. He conveys this information to John, his supervising attorney. Carlos has neglected to research the federal drug laws and fails to tell the attorney that there is not an exemption for the medical use of marijuana under federal law. The attorney, relying on Carlos’s conclusion, advises the client that once she is a certified medical user, she will be exempt from prosecution. Have John and Carlos violated any ethical rules? Explain.