Oregon became the first state to decriminalize personal possession of hard drugs like heroin and methamphetamine
Instead of going to trial and facing possible jail time, a person would have the option of paying a $100 fine or attending new 'addiction recovery centers'
Washington D.C. has also legalized therapeutic use of psilocybin mushrooms
Marijuana was also legalized in New Jersey and Arizona
Under the amendments in both those states, only those 21 and older could legally buy and use cannabis
Recreational marijuana could bring the Garden State $210 million in revenue
Combined with sales tax, legislative analysts estimate $255 million in new revenue annually for Arizona
The Smart and Safe Arizona Act also would levy a 16 per cent excise tax on pot above the standard sales tax that goes to state and local governments