The Federal Communications Commission's controversial net neutrality rules are scheduled to go into effect on Sunday, but their future is anything but certain.
The rules, which are designed to prevent Internet service providers from blocking competitors' traffic, have been challenged by all sides. A divided FCC approved the regulations in December.
Although the rules survived efforts by Republicans in Congress to overturn them, some observers say the FCC faces an uphill fight to defend the regulations in court.
Verizon and several advocacy groups have sued to block the rules. Verizon contends the FCC doesn't have the authority enact such rules, while consumer groups say the FCC's rules were too weak.
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