“4th Amendment says nothing about police investigating a crime”. . .”but upon probable cause”
But is it not implicit to obtaining a search warrant that there exists PC that there is presumption of a crime. Otherwise, if you had no PC of a crime, and provide what you are looking for, what would you base the warrant on?
Thank you for that note Hulka, but I respectfully disagree. The language of the 4th Amendment can reasonably be interpreted wider than just for crimes imo.
In fact, the Founding States used the word ”crime” in the 5th, 6th and 8th Amendments.