HBO World Championship Boxing influx of streaming options and issues with promoters, along with declining ratings and loss of interest in the sport among HBO's subscribers, made continued carriage of the sport untenable. HBO's long-term move to upscale dramatic programming and an ownership transfer to AT&T's WarnerMedia also played a role in the decision, with an HBO executive commenting that "HBO is not a sports network." Famous matches broadcast on "World Championship Boxing" include: The Rumble in the Jungle, in which Muhammad Ali regained the world heavyweight title from George Foreman in Kinshasa, Zaire in 1974; Thrilla in Manila, the final encounter between Muhammad
Muhammad Ali Pancrase in 1993, which in turn inspired the foundation of Pride Fighting Championships in 1997. Pride was acquired by its rival, Ultimate Fighting Championship, in 2007. The Muhammad Ali Boxing Reform Act was introduced in 1999 and passed in 2000, to protect the rights and welfare of boxers in the United States. In May 2016, a bill was introduced to United States Congress by Markwayne Mullin, a politician and former MMA fighter, to extend the Ali Act to mixed martial arts. In June 2016, US senator Rand Paul proposed an amendment to the US draft laws named after Ali, a