What mandate did the Commercial Crew Program (CCP) enforce regarding astronaut transport?

Answer

A private company, SpaceX, had to provide astronaut transportation services to the ISS

The CCP explicitly required that a private entity, in this case SpaceX using the Crew Dragon, must handle the service of transporting astronauts to the International Space Station, thereby ending the need for Soyuz.

What mandate did the Commercial Crew Program (CCP) enforce regarding astronaut transport?
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