Next Government Takeover: The Internet

WASHINGTON—In a move that will stoke a battle over the future of the Internet, the federal government plans to propose regulating broadband lines under decades-old rules designed for traditional phone networks.

The decision, by Federal Communications Commission Chairman Julius Genachowski, is likely to trigger a vigorous lobbying battle, arraying big phone and cable companies and their allies on Capitol Hill against Silicon Valley giants and consumer advocates.

Breaking a deadlock within his agency, Mr. Genachowski is expected Thursday to outline his plan for regulating broadband lines. He wants to adopt "net neutrality" rules that require Internet providers like Comcast Corp. and AT&T Inc. to treat all traffic equally, and not to slow or block access to websites....