"We must have American dominance", Trump said at the White House.
As a result, he said, he would be asking the military to create a new branch which would focus on space particularly. That legal rationale was deemed unconstitutional through a series of Supreme Court decisions, ending with 1954's Brown v. Board of Education.
Nelson - who led the opposition in last year's failed attempt to establish in the annual defense policy bill a separate space corps within the Air Force - made a similar statement during a Senate Armed Services hearing in March.
Trump's Monday announcement appeared to come as a surprise; most of the National Space Council meeting centered around cooperation between the federal government and private industry, specifically concerning where private companies can launch spacecraft so as not to collide with satellites and space debris. The Air Force is the country's youngest branch and was added shortly after World War II.
On space traffic management, the policy says that the United States should continue to provide basic space situational awareness data and basic space traffic management services free of direct user fees. Stressing on the U.S. commercial space industry's spending power and enterprising spirit, Trump said the United States will lead the exploration of the Moon and Mars in future, as well as any space race that might happen.
Trump had previously suggested the possibility of creating a space unit that would include portions equivalent to parts of the Air Force, Army and Navy. He was joined by Mike Pence, the new Nasa administrator Jim Bridenstine and former astronaut Buzz Aldrin, the second man to walk on the moon.
Yes, Trump said "separate but equal", a term which can be traced to Plessy v. Ferguson, the 1896 Supreme Court decision that was used to uphold racial segregation in public facilities.
In his announcement Monday, Trump said his administration is intent on sending US astronauts to the moon again.
NASA is planning a series of lunar missions from next year.
President George W. Bush in 2004 said humans would return to the moon by 2020.