And where in Article II is the President granted the authority to spy on Americans without a warrant? Keep in mind that anything you grant to a Republican can also be used by a Democrat.
Just remember, all of you who demand (DEMAND!) the President be given the authority to spy on Americans when troops are engaged...
...someday there will be a Democrat in the White House, you know, the same Democrats who claim terrorists go to gun shows to get their weapons and manuals, and that gun owners need to be looked at too.
There are many court decisions regarding this. Maybe you should look them up so you can discuss this from an informed perspective. And I notice you completely sidestepped the wartime aspect of the discussion. I wonder why?
Keep in mind that anything you grant to a Republican can also be used by a Democrat.
I am quite aware of that. But that still does not change the fact that Congress has limited ability to intrude on executive powers. You want Congressional powers to be sacrosanct but have no problem curbing the executive. Quite frankly, Congress has done FAR more to infringe rights than the Executive.
Congress has a remedy - impeachment and removal of a president who abuses executive powers. But its legislative remedies are limited.