Yes, all passengers and crew on private jets must go through customs and immigration when crossing international borders, just like commercial travelers. While the process is significantly faster and more discreet, it is just as mandatory. Private jets must land at a designated "Airport of Entry" (AOE) that has on-site customs facilities. Often, the inspection takes place within a Fixed-Base Operator (FBO)—a private terminal building—rather than the main public terminal. In many cases, customs officers will meet the aircraft directly on the tarmac or inside the FBO to verify passports, check visas, and review customs declarations. Private jet operators are required to submit a "General Declaration" (manifest) in advance so that authorities are prepared for the arrival. While the "wait in line" factor is eliminated, the legal requirements for entry, including duty taxes on imported goods and agricultural inspections, remain strictly enforced to ensure national security and border integrity.