Which of the following is NOT a method through which security regulations are created in the U.S.?

In the context of how security regulations are created in the U.S., the correct choice highlights that international treaties are not a direct method for establishing security regulations. Security regulations at the national level primarily originate from specific acts passed by Congress, policies developed by agencies like the Transportation Security Administration (TSA), and presidential executive orders that can dictate actions and regulations related to national security.

While international treaties may shape the broader framework or influence domestic laws regarding security, they are not themselves methods used to create regulations specifically for aviation security within the U.S. Instead, treaties often require ratification and are more focused on international cooperation than on direct regulatory measures. As a result, when it comes to managing and enforcing aviation security within U.S. jurisdiction, the other methods mentioned play a more definitive role.