impairment to amelia's brain. there was a change over here in the anterior singulet cortex. it is the part of the brain responsible for decision making emotion and empathy, which could all play a role in ptsd. >> very, very compelling and certainly leads me to want to look much more closely and much more in depth at this type of process. >> most importantly, amelia felt better, reporting a 60% decrease in anxiety, something none of her previous medications had ever done. these are exciting results for a research revolution, a revolution that these three senators now want to take to the next level. >> this bill that we are introducing seeks to right decades of wrong. >> march 2015, democrats cory booker and kirsten gillibrand along with republican rand paul have just proposed the most audacious marijuana legislation