This needs to be challenged to the Supreme Court level whereby it is deemed unconstitutional for TSA agents to detain and seize people and their possessions without actual demonstrable cause relating to national security and/or the spirit of the law(s) governing their policies and procedure.
If overly broad legislation is being abused against the spirit and intention of it, then the court needs to step in to legally to rule that this cannot be done, so long as such finding is in line with the constitution.