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.
Carry-On Size and Weight. Most airlines will allow one carry-on bag along with one personal item. Maximum size for most airlines is 45 linear inches, including length plus width plus height. The maximum weight is 40 pounds or 18 kg. If your luggage is larger, it should be checked in, since no oversize luggage or package can be stowed aboard, according to the FAA.