The discussions are especially relevant for American travelers returning from international trips, business travelers flying globally, and international tourists entering the United States through major gateway airports. Millions of US passengers rely on fast and efficient customs processing every year when arriving from overseas destinations. Aviation experts say maintaining smooth customs operations is critical for reducing delays, supporting international tourism, and protecting broader airline network stability across North America. Travelers flying through airports such as New York, Los Angeles, Chicago, San Francisco, Seattle, and Newark could be among the first to notice operational changes if any future restrictions are implemented.