That's like saying aircraft inspections is the FAA's job and it's not Boeing's job "to just hand everything over." Entering into a country's borders is a privil

That's like saying aircraft inspections is the FAA's job and it's not Boeing's job "to just hand everything over." Entering into a country's borders is a privilege and you submit to an inspection in doing so. One of the very first things the American founding fathers did in 1789 was to create a customs service to perform border inspections: https://en.wikipedia.org/wiki/United_States_Customs_Service https://en.wikipedia.org/wiki/United_States_Customs_Service.