Make sure nothing has any resin in it or smells like weed AT ALL. If they do find it and they cant prove you have been smokin herb with the two pipes they may just take them anyways. They can do that im sure.

One time we were going back to Cleveland from Mexico and my mom had a pair of little sisors (sp?) in her suitcase and they got by the security in Mexico. Then in Cleveland they searched her bag again and found them and took them even though we werent going on another flight. So i believe they can take any weapons or paraphenalia.