Great. Inviting the other nations in means a repeat of the ISS fiasco. Bloated budgets, limited success and nothing to show for taxpayer dollars. In 20 years space will be dominated by private interests and NASA will be just another hasbeen worthless government agency that refuses to die long after it's usefulness has passed.
I'm trying to picture what it will be like decades from now when thousands of humans are in space, and the federal governments orders them to submit their taxes.