Paul Schwartz and Christopher Hoofnagle quoted by The Guardian, March 21, 2017
Paul Schwartz … noted that the 9/11 hijackers had a cell in Hamburg, Germany. “One potential problem with this approach where you single out countries is that you ignore the extent to which the terrorist threat is kind of state-less,” he said. “The terrorists have cells throughout the entire world.”
Efforts to more broadly restrict laptops on planes would likely face widespread resistance, said Chris Hoofnagle. …. “It’s a massive inconvenience to have to check a laptop, and you can imagine that such a demand is met with resistance by air carriers, who are powerful lobbies.”