In Sweden, only the people who say they are not applying for asylum are checked.
To avoid having to show any papers, a terrorist going to Sweden to commit acts of terror only has to tell the border police that he is seeking asylum. He will immediately be driven to the closest Immigration Service facility. And while the Immigration Service tries to figure out who he is, he can plan his attacks in the peace and quiet of the Swedish countryside.
“The truth is that persons with evil intent know exactly what to do when they come here. That information spreads like wildfire. These new border controls are there for the sole purpose of reassuring the public. They have absolutely no effect on the influx of migrants.” — Border policeman at the Öresund Bridge (between Denmark and Sweden).
Despite many Swedes drawing a sigh of relief when the government announced that immigration was to be limited, the new policy does not really entail any difference at all.