NASA 90 Day Study

The Space Exploration Initiative was a 1989–1993 space public policy initiative of the George H. W. Bush administration.

On July 20, 1989, the 20th anniversary of the Apollo 11 Moon landing, George H. W. Bush — then President of the United States — announced plans for what came to be known as the Space Exploration Initiative (SEI). In a speech on the steps of the National Air and Space Museum he described plans calling for constructing Space Station Freedom, sending humans back to the Moon "to stay" and ultimately sending astronauts to explore Mars. He proposed not a 10-year Apollo-style plan, but a long-range continuing commitment based on the three above elements, ending with “a journey into tomorrow – a journey to another planet – a manned mission to Mars.” The President noted it was humanity’s destiny to explore, and America’s destiny to lead. He asked Vice President Dan Quayle to lead the National Space Council in determining what was needed to carry out these missions in terms of money, manpower and technology.

In the event, execution of the initiative was assigned to NASA, but the initiative did not survive long into the administration of the next president, Bill Clinton.

In August 1987 a committee chaired by former astronaut Dr. Sally Ride released a report entitled Leadership and America’s Future in Space. The "Ride Report" advocated establishment of a permanent moon base by 2010 and landing a crew on Mars early in the 21st century.

On January 5, 1988 President Ronald Reagan approved a revised United States national space policy, which was classified. On February 11 a summary "Fact Sheet" about the policy was publicly released. The policy identified six goals of United States space activities, the last of which was, "to expand human presence and activity beyond Earth orbit into the solar system."

...
Wikipedia