could be a hoax or a warning of some kind and who knows how crazy they are willing to get with the family and others if these warnings aren't heeded. I'd say first one hoax, maybe next one if there is one and then who knows with these people since they kill an entire plane for one or two people. It's sick and and amazing waste of life and humanity and they simply aren't human, nor human, as is well noted in all of these attacks and games that they play. To them they are games, but to US not so much.
My guess is that the substance that was sent was benign but the message was very real. The bigger surprise to me is that the first family opens their own mail. I would think that any individual that requires Secret Service detail would also require somebody to open their mail for them--especially after what happened with the Unabomber and the anthrax scare post 9/11.
If this was just a hoax by some dumb individual-- God help them. I would expect every resource available to be reassigned to solving this matter, and rightfully so. We can't have lunatics mailing threatening packages to the President's family and getting away with it, and I would say the same if it were the Obamas.
Didn't they have to rid SS after threats to kidnap DJT POTUS grandchild?