The Trump administration wants to retain the option to develop a road-mobile variant of the new Ground Based Strategic Deterrent, objecting to legislation that would extend through 2030 the current statutory ban on truck-launched intercontinental ballistic missiles -- which are more difficult for an adversary to target than silo-based weapons. The White House Office of Management and Budget, in a July 9 statement of administration policy , formally objected to a provision in the fiscal year 2020 defense policy bill...