The mission of FISA is explicitly not for fighting crime! It is for foreign intelligence collection only. It's also ill-suited for the purpose.

State and federal law enforcement can request a warrant. The turnaround time is far lower, the search methods more diverse, and the evidence gathered can be used in court.

Unfortunately, state law enforement can still subpoena your email metadata and your phone records without a warrant: https://en.wikipedia.org/wiki/Smith_v._Maryland