Since the frontiers between different countries have almost stopped having any importance, nobody bothers to control your passport. (*) frontiers (*) stopped (*) any (*) control
This is a companion discussion topic for the original entry at https://english.best/questions/24246,since-the-ufrontiersu-between-different-countries-have-almost-ustoppedu-having-uanyu-importance-nobody-bothers-to-ucontrolu-your-passport/