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.
Overview. Despite the long list of regulations for air flight, the TSA is less strict on the topic of travelers' medications. Travelers are permitted to carry only 3.4 ounces of liquid in their carry-on bag, but the TSA does not limit the amount of liquid medication you can carry onto a plane.Other medication, including pills and vitamins, are also permitted in your carry-on luggage in unlimited amounts.ou don't have to pack all your medication and vitamins in the same bag or receptacle in your carry-on bag to meet TSA guidelines, but having all the items together will expedite the screening process in the event a screener needs to open your luggage to inspect its contents.