Net Neutrality grew from common-carriage principles that require network operators to serve the public without unreasonable discrimination. When Congress updated the law near the beginning of the Internet era in 1996, it preserved this important distinction between online content, which the FCC can’t regulate, and carriage, which is the cornerstone of our telecommunications system.
On Feb. 26, 2015, the Federal Communications Commission voted to protect Net Neutrality — marking one of the biggest victories for the public interest in the agency’s history. This two-page primer sets out what's now at stake.
freepress (2015). PDF.