[Jacquerie]

As for “Proper,” does the proposed bill violate our Natural or Constitutional rights? Does it involve a power retained by the states? If yes to either, it is not proper.

Is airline security executed by a federal agency necessary? I don't think so. We have the TSA primarily to relieve the airlines from expense and liability, not to provide security.

Are scanners and genital searches proper? Phht.

[Ken H]

As for "Proper" does the proposed bill violate our Natural or Constitutional rights? Does it involve a power retained by the states? If yes to either, it is not proper.

Correct. That's why Wickard and its progeny are so pernicious. They have expanded the scope of what is deemed Proper for Congress to regulate.

Scalia not only endorsed Wickard as Proper, he expanded its reach to include intrastate activities that do not themselves substantially affect interstate commerce, if they are Necessary to make the regulation effective.