There has to be some background thing going on. I hate to use the parallel of SEELE in Evangelion but things just keeps seeming to happen that smells of a bigger skunk than the one that's presented in front of the TV. Call it the 1% club or something...
I will note that BOTH Republicans and Democrats overwhelmingly voted for this. Granted it was given little time for review and some of it was slipped in literally hours before vote. So our politicians are either lazy, complacent, or complicit in it. Or a combination of all of the above.
The problem is that even calling it "for national security" doesn't trump the constitution. Anyone could challenge any action based on that. The problem is that it's hard to mount a defense from a cell in a "black" holding facility.
When laws are presented like this, it assumes a benign benevolence on the part of our government, and we desperately want to believe in that, but it takes so little to pervert that into totalitarian control...
This isn't a possible takeover at the street level, but one from the top down. One right taken at a time, over time, to keep the sheep complacent, then the lynchpin is popped and the whole illusion of freedom is collapsed, with the soldiers that were once our protectors forced to be our keepers. Kind of a rather disheartening thought.
Convenient that they slip this little nugget of goodness in during the holiday rush when Americans are too busy to pay attention. And people wonder why I suspect a bigger rat...
But, the Sheep will just keep being sheep. Few will demand the recall of their politicians, few will speak up, few will do anything but keep staring at their smartphones or TVs or computers. Honestly, vapid consumption of media (read: complete distraction) along with a promise of security is the most effective tool for domination, and has been for as long as time, because people go into it willingly. Hey, it worked for Caesar and Hitler... It's not till the 'net is turned off that people would really care.
As much as we want to say we value our freedom, few of us actually want to put the work into maintaining it. Until it gets REALLY bad, even fewer will be willing to stand against it.