Or more so, how did it happen.
1. The NSA is spying on people with out warrant in violation of the COTUS.
2. We are assassinating people with out due process using predator drones some of them US citizens.
3. Changing law though executive fiat.
Now, it doesn't matter when or who started this but this is where we are at, how did we let this happen?
You forgot to cite the Supreme Court cases ruling any of the above "unconstitutional."
And item 3 is meaningless absent a specific example and case citation.
It's also telling how you and others on the right perceive this as an "issue" when a Democrat is in the WH, where Republican presidents have done the same and more, with conservatives remaining silent.
Consequently, the premise of your thread is disingenuous, and not a sincere expression of concern, but instead just another example of the conservative misery offensive.