Marijuana usage is now legal in 14 states of the USA including California. Marijuana has a number of medical benefits such as cures glaucoma, heals headache and body pain, etc. If all the state and federal laws of the cannabis followed properly, then it will be the most profitable business. People should learn a greater knowledge of medical marijuana business laws to retain a good position in their medical marijuana business. Most of the state law allows the non-profitable cannabis business, which supplies the marijuana only for medicinal purposes.