Section eight of the Canadian Charter of Rights and Freedoms states, "Everyone has the right to be secure against unreasonable search or seizure."
The U.S. Constitution - Amendment 4 states, "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
Personally invasive searches are unreasonable when travelling by foot, by car, by boat, by bicycle, and, I contend, by aeroplane.
If society agrees that it is unreasonable to be virtually strip-searched or intimately groped while travelling by plane, then the TSA is violating a fundamental right of North American society.