Space Shuttle Solid Rocket Booster design or replacing them altogether with liquid "flyback" boosters using either Atlas V or Delta IV EELV technologies. The 5-segment SRB, which would have required little change to the current shuttle infrastructure, would have allowed the space shuttle to carry an additional of payload in an International Space Station-inclination orbit, eliminate the dangerous "Return-to-Launch Site" (RTLS) and "Trans-Oceanic Abort" (TAL) modes, and, by using a so-called "dog-leg maneuver", fly south-to-north polar orbiting flights from Kennedy Space Center. After the destruction of "Columbia", NASA shelved the five-segment SRB for the Shuttle Program, and the three surviving Orbiters, "Discovery", "Atlantis", and "Endeavour"
Space policy of the United States by executive order, which was discontinued in 1993 by President Bill Clinton. President Donald Trump reestablished the Council by executive order in 2017. International aspects of US space policy may involve diplomatic negotiation with other countries, such as the 1967 Outer Space Treaty. In these cases, the President negotiates and signs the treaty on behalf of the United States according to his constitutional authority, then presents it to the Congress for ratification. Once a request is submitted, the Congress exercises due diligence to approve the policy and authorize a budgetary expenditure for its implementation. In support of this, civilian policies