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.
Passengers face many restrictions on bringing liquids, gels, creams, and aerosols onto airliners. In short, if the container is larger than 3.4 fluid ounces (100 ml), you can't bring most aerosols, gels, and liquids onto an aircraft or even into the secure area of the airport. If the container is small (a capacity less than 3.4 fluid ounces or 100 ml) you can bring as many as you want in your carry on bag. 2  If the container is larger than 3.4 fluid ounces (100 ml), you may not be able to bring it through security.