rules and filing court proceedings against major sports leagues that sought to prevent game telecasts involving local NBA and Major League Baseball teams from being imported to other media markets. Distant signal regulation and conflicts During the 1960s, the FCC began to severely restrict the importation of distant signals by larger CATV and cable systems, limiting their distribution to smaller-market and rural systems, based in part on the framework of the 1963 Carter Mountain Transmission Corp. v. FCC case, which stemmed from a legal challenge by Chief Washakie TV, then-owner of KWRB-TV (channel 10, now KFNE and operating a satellite station of Casper Fox affiliate KLWY) in Riverton, Wyoming, against the FCC license of Cody-based microwave relay firm Carter Mountain Transmission Corp., which intended to relay the signal of CBS/NBC affiliate KTWO-TV (channel 2) in Casper, Wyoming to CATV systems in three cities that were within the range of KWRB's off-air signal: Riverton, Lander and Thermopolis. The FCC's denial of Carter's license renewal—because of its refusal to guarantee KWRB program duplication protection and the harm it would induce to the station, especially given Carter's refusal to offer the KWRB signal—was affirmed in a unanimous, three-judge decision by the U.S. Court of Appeals for the District of Columbia on May 24, 1963, and a consideration refusal on the case by the U.S. Supreme Court on December 19. Further expansion of "proto-superstation" signals came through federal court rulings on separate lawsuits filed in July 1961 by United Artists and WSTV Inc. (then-owner of WSTV [channel 9, now WTOV-TV] in Steubenville, Ohio) over Fortnightly Corp.'s importation of television stations from the Pittsburgh, Pennsylvania and Wheeling, West Virginia–Steubenville, Ohio markets to its Fairmont and Clarksburg, West Virginia systems and in December 1964 by CBS (over TelePrompTer's importation of stations from New York City, Albuquerque, New Mexico, Billings, Montana and Denver, Colorado to its systems in Elmira, New York, Johnstown, Pennsylvania and Farmington, New Mexico). In the former case, the Supreme Court ruled in a 5–1 vote on June 18, 1968, that CATV systems like Fortnightly did not incur copyright liability by retransmitting distant signals as they acted more akin to "viewers" than broadcasters; the latter case, ruled on May 2, 1972, by Judge Constance Baker Motley of the U.S. District Court for the Southern District of New York, affirmed that stance based on the Supreme Court's framework on the Fortnightly v. United Artists case.