Under which regulation do special agents have the authority to inspect all non-U.S. citizens seeking admission?

Special agents have the authority to inspect all non-U.S. citizens seeking admission under the regulation found in 8 USC 1357(a)(1). This law empowers designated officers, including special agents, to exercise authority at ports of entry and other locations to enforce immigration laws. It specifically designates the ability to question and inspect individuals who are not U.S. citizens, ensuring that agents can verify the legal status of those attempting to enter the country and enforce regulations accordingly.

The regulation focuses on allowing agents to carry out inspections and apprehend individuals as necessary to uphold immigration laws. This authority is crucial for identifying inadmissible individuals and maintaining national security. The other options listed do not directly confer the same level of authority related to the inspection of non-U.S. citizens seeking admission, as they pertain more to specific actions or penalties related to illegal entry or status rather than the broader authority to inspect.