Amos, specifically where in the Constitution?

And stop ignoring the fact that the EO stipulates that no warrant(s)
are required for this process. That is being superficial.

The courts have been giving ongoing approval for the process every year. There was one hitch when some private citizen tapping was done in error about a year ago. The court(s) took care of that.

Still waiting for the Law some say was broken. Otherwise, the hopes for impeachment are a moot point.

Once again, A fact is needed rather than a feeling.