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.
Although liquids might not seem as dangerous as other prohibited items such as weapons or knives, the TSA strictly regulates the amount of fluid you can carry on a plane. The Transportation Security Administration prohibits you from carrying bottles larger than 3.4 ounces in your carry-on luggage or on your person.