America has had Jump Warp Drive since 1972. This Warp Drive has been tested since 1972. I was involved in two tests. It works. It is a Galactic Warp Drive. The second test some 20 years ago took me to the Cigar Galaxy. The first test was to Mars.
Its efficiency in moving things vast distances instantly is too great to keep it under wraps forever. We must Colonize for safety. Warp Drive makes this practical both for establishing a Colony and effecting trade between Earth and the Colony. In short, the Colonies wouldn't be expensive add ons. Rather they would build the American economy.