Ukuhlolwa kweCustoms kungase kwenziwe kunoma yikuphi ukuthunyelwa okungeniswa e-US. I-Customs and Border Protection (CBP) ingase ikhethe ukuthunyelwa kwezivivinyo zentela engenayo ngokusekelwe ohlelweni lokukhomba olunikeza amaphuzu kumthwalo ngamunye.
Imininingwane yesistimu yokukhomba iyimfihlo, kodwa uma umphumela weqe uphawu oluthile, i-CBP izobeka ukungenisa kwamanye amazwe ekubuyekezweni okwengeziwe. Kungase kube-ke kuphoqelele uhla lwemithetho emisiwe ezimpahleni ukuze kuthathwe izinyathelo ezengeziwe ngaphambi kokuba zikhishwe. Uma kungenjalo, i-CBP ingase iqhubeke nokuhlolwa kwemikhuba, okusho ukuthi i-X-Ray noma i-Tail Gate noma ukuhlolwa okujulile, kuye ngedatha kanye namaphuzu wokugcina ahlosiwe.