Gee, maybe we really shouldn't be screening airline baggage either without a specific threat... ARGH!!!
You are absolutely correct. See Amendment IV
Airport search and seizures by "federalized" employess blatantly violates Amendment IV.
Requiring by law, that airlines purchase x-ray equipment to search their customer's luggage violates Amendment V (nor shall private property be taken for public use without just compensation.)
"They that can give up essential liberty to obtain a little temporary safety, deserve neither liberty or safety." Benjamin Franklin - 1759