Odds and Ends
17 8, 4:36pm
Not if their decently manned and operated. They won't stop every criminal/terrorist or other unwanted person but they can stop some. As well as unwanted/dangerous materials, animals etc.
its like saying that since the police don't stop all crime and catch all criminals they might as well be scrapped. Borders can be ineffective, either because their poorly organised/funded etc or too bureaucratic but there's no problem with the general idea.