For too long, the solution to Internet piracy has been to “round up the usual suspects.’’ While the US economy loses billions because of copyright infringement every year, it seems the only people held responsible are stray hackers and unlucky college students, who downloaded one song too many from their dorm room. The Stop Online Piracy Act (SOPA) currently before Congress would finally give law enforcement the necessary tools to crack down on the websites that enable Internet piracy.