My wallet has a removable drivers license holder. It has two sides that are clear for viewing Ids. One side I have my DL the other side I have my GFL. Should I leave my GFL at home as not to have any hassle with the TSA?(I must show birth cert and DL to get on plane) OR would it help to prove that I am an upstanding citizen etc. Also anyone see any problems if I do take my GFL and have to show ID in Mexico? Thanks for any thoughts! p.s. While I am at it... can I take my Kershaw auto knife? Not in my carry on/person of course. Anyone know of ability to carry knives in Mexico? What about my surefire E2D?