As of now, 20 states have legalized marijuana for medical purposes, and voters in Colorado and Washington have approved marijuana for recreational use. About a dozen more states are expected to legalize marijuana in some form over the next several years.
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.
Best Answer: For carry on luggage: Each container must be NOT LARGER than 3.4 ounces, or 100 ml. DO NOT bring a half full 6 ounce container - that will be tossed out. You may bring as many container as will fit into a 1 quart zip lock plastic bag, AND allows the bag to close normally.