Customs officers are responsible for inspecting documents and enforcing regulations related to the entry and exit of goods and people at transportation hubs.

The claim that customs officers are responsible for inspecting documents and enforcing regulations related to the entry and exit of goods and people at transportation hubs is substantiated by various sources, despite their classification as "not trusted." U.S. Customs and Border Protection (CBP) is explicitly tasked with inspecting individuals at Ports of Entry (POEs) to determine their admissibility, as highlighted in the first source. This aligns with the broader role of customs agencies, which includes regulating the import and export of goods and enforcing customs laws. While the sources may lack the rigorous credibility of peer-reviewed studies or established media outlets, they collectively affirm the responsibilities of customs officers in managing both goods and individuals at transportation hubs. Therefore, the claim holds true as it accurately reflects the duties of customs officers in the context of border security and trade regulation.