The courts intrinsically have a fairly (relatively) high standard of evidence necessary to constitute "probable cause" to issue a warrant. Unless you're referring to FISA Courts/Warrants which are just a larger slap in the face than this.
Also, with that level of snark, I have to ask, what do you propose as an alternative?
Introduce various independent levels of city, county, state and federal police with special separate forces in charge of major crimes, terrorism, drugs, money laundering etc
Then they will spend all their time and effort fighting each other for funding jurisdiction and media spotlight that they leave the innocent bystanders alone.
Of course they wont catch any criminals - but no plan is perfect.
That would remove any concern over civil liberties