"Section 215: Authorizes federal officials to obtain "tangible items" like business records, including those from libraries and bookstores, for foreign intelligence and international terrorism investigations."
It was previously legal to obtain those records in organized crime investigations, with a court approved warrant, and the Patriot Act extended those investigatory means to terrorism investigations with a FISA court approved warrant. In other words, before the Patriot Act it was easier to investigate the mafia than it was Al Qeuda. The same type of thing is true with many of the Patriot Act provisions.
So the difference is the feds don't need a court approved warrant. And that's where I have concerns with a Clinton Administration having those powers.
Politicians have an unnatural knack of abusing power. IMHO, it's best to have the Patriot Act temporary, requiring renewal from time to time.