Holding: Because the FCC has advanced a reasonable interpretation of its regulations i.e., that to satisfy its duty under §251(c)(2) of the Telecommunications Act of 1996, a carrier must make its existing entrance facilities available to competitors at cost-based rates if the facilities are to be used for interconnection, the Court will defer to the FCC's views. (Kagan, J., recused.)
Plain English Holding: The Federal Communications Commission can bar AT&T from charging market rates for access to the equipment its competitors need to access AT&T's network.
Judgment: Reversed, 8-0, in an opinion by Justice Clarence Thomas on June 9, 2011. Justice Scalia filed a concurring opinion. (Kagan, J., recused.)