The term isolationism is thrown around normally by the RINO's, it's a term really to shut people up about protecting American rights on immigration, jobs, etc. We are dependent on other countries for goods now and that is the problem as to why our economy has stalled and the middle class is disappearing. Once manufacturing moved to China and other third world slave labor camps the decline begin.
It would seem to me we could remain open as to trade if we had someone who made the deals who loved our country and it's workers rather then look at his/her own portfolio.
It's really very simple if we don't begin manufacturing again at a high level capitalism/freedom is gone IMO, think what a war would be like with China it would be difficult for us to build any huge war machine as in WW2, and of course WalMart would shut down.
What makes you say our economy has stalled?