There's an energy crisis?
1. We have already hit peak oil. Nothing can stop gas and oil thus from getting more expensive.
2. Using any kind of fossil fuels will bring about the end of life on earth as we know it if we do not stop 10 years ago.
3. Maybe you hadn't noticed that gas prices are poised to go over 5 dollars a gallon.
4. Geothermal power and solar power would be an order of magnitude cheaper and greener, and transforming over to them would boom the economy.
5. Exxon oils billion dollar propaganda campaign has managed to keep the real solutions off the table.

Why should the US deal with global poverty?
Because the only way to prevent the eventual nuclear destruction of a few dozen USA cities at the hands of Al Qaeda et all is to actually solve the problems. I could build a nuke out of a microwave oven and 300 dollars worth of spare parts from radio shack. The rest of the world won't stay ignorant forever.
And exactly how is the economy tanking?
Fannie may. Freddie mac. Drop 500 points yesterday? Dozens of banks loosing it? did you just wake up from a coma? Bushes tax cuts to the rich
made the rich richer and the poor poorer at a new multiplied rate which has now created a systemic failure arising from "trickle up". Unless we seriously turn this thing around immediately, the USA is going to crumble economically. Its already a situation where every last bubble is being popped in a domino effect, and thats not good, because the USA economy for 50 years has been based on nothing but ephemeral bubbles.
Yes you are mistaken. An aircraft traveling at 5 times the speed of sound (aprox 3,600 mph)will never be a true spacecraft as a matter of fact it will never reach space - ever. Air breathing aircraft have more difficulty the higher they climb, with a traditional rocket transport system you don't have to worry about lack of atmosphere you'll still get thrust with no air. Shuttle and Soyuz are a totally different ball park they travel at speeds of 28,000 mph not a pathetic 3600. The only use I could foresee for this project is using it as a military aircraft to launch hyper sonic missiles - more money for the military industrial complex less money for NASA and exploration
I'm a proponent of ram rocket technologies and design them. But no known ram rocket will work in between atmosphere and compression speeds on a space ram rocket. That requires actual standard fuel rockets. Space tethers are great, but first we have to tow an asteroid into earth orbit to base it from.
The simple fact of the matter is that this project is fluff. There is no good use for such a vehicle other than as a
weapons platform. We would be wiser to spend the money on ram rocket R+D for a decade than to try to actually make any planes. The current tech level is right at the edge of being able to do it right. Sure we can build super sonic planes right now, but only at enormous expense and such. And they are going to be primitive compared to what we will be able to build 20 years from now, because we are on a technological cusp and have yet to cross it.
Once we know how to do it, then it makes sense. Till then, its a gimmick toy for the military industrial complex.