Can you travel on commercial airlines with your medical marijuana?

Can you travel on commercial airlines with your medical marijuana?

I put it in my tin can, that the government provides, I put it in my carry bag, I've got all my proof, and that's how I travel with it. Because FDA always told me, never check it through. Always keep it on you. And that's what I do. I always get to the airport two hours early - even before 9/11. Because when you're carrying something like that, going through airports, you expect a problem. Plus, I always let airlines know that I was traveling with it. Up to my lawsuit against Delta. I stopped that habit after that. Other patients aren't calling them saying, "hey, I'm going to be on your plane, I'm going to have Valium with me," - why should I call them about my medicine? So I stopped that practice.