You are an Economic Ignorant. Take some BASIC Econ classes and you will learn why the statement you made is so rabidly irrations. Economic Isolationaism is a DISASTER for every society that has tried it. It is the SOVIET UNIONS Economic school. What bone head ignornat fools the Economic Isoationsists are.
We don't need isolationism, we need to eliminate socialism.
Take a look at what percentage of one's income goes to taxes. Then look at the minimum wage laws, and other financial losses most companies must incur by law just to stay in business. On top of that add unions which mostly just demand more pay for less work. Result is: the cost of doing business in the USA is so high it's cheaper to send it elsewhere.
Unfortunately, socialism is getting so ingrained, and is so complex, that it's far easier to call for isolationism - which is just another form of socialism.
Don't just call isolationists ignoramuses, explain why socialism is the problem and why isolationism is just protecting/reinforcing socialism.
"You are an Economic Ignorant"
There is a happy medium between "isolationist" and "giving away the store" (Destroying the middle class, who are probably doing the fighting for us in Iraq when those countries are not doing their share against Terrrism.)