how did bush get around these "support systems" ? 
He didn't, he is working in them according to plan.
Are you familiar with the PNAC document? WIKI it. Cheney, Jeb, wolfy, rummy, and helf of the future Bush admin all sat down and wrote down their plan. It involved a "new pearl harbor" which would lead to permission slip to start 3 wars in middle east in the 3 pipeline nations (afghan, iraq, iran all in a row).
They told us the plan, and we voted them in. And they're following the plan to keep the dollar in play and to control world oil and the bases too.
Bush is following a plan quite well. Sure, the side effects are bad, but as far as the goals go, the support system worked great here. we have bases, oil, etc. Bush will be seen as a success by history. Rid the world of terrorism, control oil of arabia, etc. Bush wins, dude.