On Monday, a Federal Judge ruled that the National Security Agency’s phone snooping is likely unconstitutional.

The phone snooping of the NSA is a program that collects information on almost every telephone call made to, from and within the United States.
Due to a lawsuit by Larry Klayman, a conservative legal activist, U.S. District Court Judge Richard Leon issued a preliminary injunction. This would bar the NSA from collecting ‘metadata’ on the individuals Klayman is representing.
Leon stated: “I cannot imagine a more ‘indiscriminate’ and ‘arbitrary invasion’ than this systematic and high-tech collection and retention of personal data on virtually every single citizen for purposes of querying it and analyzing it without judicial approval.”
So you may be asking what about this is unconstitutional. Well, take a look at the Fourth Amendment which says:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
Leon’s 68 page opinion on the case can be found HERE.