Recreational Marijuana States. Four states, including Alaska, Oregon, Colorado, and Washington, as well as Washington D.C. have passed ballots legalizing recreational marijuana. The amount you can possess at one time, however, varies between the states.
As of January 31, 2014, passengers traveling internationally into the U.S. and connecting to another flight are allowed to have in their carry-on baggage liquids in excess of 3.4 ounces (100 mL) that were purchased as duty-free merchandise.
The 3-1-1 rule restricts liquids carried on board the plane to one clear quart sized zipper bag per passenger. Bottles must also measure no more than 3.4 ounces. This means, for example, that you can't use a six-ounce bottle that's halfway full. Any additional liquids you need to pack need to be in checked bags.