after bobby's first trip to colorado in 2015, hailey started treatments with charlotte's web. >> you ready? >> reporter: there was no anteguarit would work, but the smithst was worth a try. >> there it is. taste like brussels sprouts? >> reporter: lisa and bobby are hopeful as they wait to see if it works. jennifer collins is using the thc-a she first tried in colorado, and beth and patrick are lowering the doses of her anti-epileptic pharmaceuticals. they recently shared that after two years, jennifer continues to respond well to medical marijuana. so now that you know that thc-a works for your daughter, are you prepared to break or circumvent federal law in order to make sure she continues to get it? >> we wouldn't have worked this hard for this bill if we weren't. >> reporter: for teresa elder and her son, tommy, the situation is a bit more complicated. theresa works for the federal government. by law, you can't possess it, because you are a federal employee, right? >> right. >> but do you have an overriding moral responsibility to your child? if a doctor says it might be able to help, if all your research says it might be able to help, do you help y

requirements are to be over 21 and to have a ticket.chaz smith, founder friendly farms 'you can come smoke, buy, enjoy with us. itús history today.'bobby, cannabis cup judge'things are changing around the world, itús not like it was 20 years ago. peopleús eyes are opening.' bobby west says heús been judging cannabis cups since the late 90s... an event he says was only allowed in europe.he says city council made the right call allowing this event to happen.bobby west, cannabis cup judge'and all these stores around here, gas stations, hotels, they all sold out, gas, everything.' also adapting to the changing world, cal expo police are enforcing a strict perimeter around the event.a high school volleyball tournament is also happening at cal expo today... but a cal expo spokesperson says the weed smoking event is twice as far from it as the state requires... more than twelve hundred feet away.nats carl talking'nah smooth, good. flavor, nothing but flavor.' meanwhile carl is happy to be taking part in california marijuana history.'21 and older and itús just your id, i think thatús pretty cool.' :00 ááá ((vicki)) new tonight at nine...a happ