All the more reason for us to speed up NASA's plan to go to Mars by 2030. Get the VSE out of the way and just GO! Continue building Ares, but finance the shuttle to keep flying , build 2 more and bring the fleet up to 5 (with new tech of course). That way there's two launch architectures available, convert the shuttle to an ISS cargo/passenger vehicle and to keep Hubble operational. Use the new tech Orion/Ares to stretch out and explore the moon and Mars.
If the idea is to get us out there and doing commerce, the Treaty needs to be repealed. It would then happen so fast that NASA would wonder where everybody went.