A lot of US airport inefficiency is self-inflicted: 1. no transit terminals so everyone has to do full immigration 2. no international one-stop-security, so e

A lot of US airport inefficiency is self-inflicted: 1. no transit terminals so everyone has to do full immigration 2. no international one-stop-security, so every international arrival with a connection (except those pre-cleared) have to redo it UK airports are also guilty of #2