Should America have a strong dollar or a weak dollar

I think America should have a weak dollar because it cuts expenses especially for those unnecessary things. After the wake of the economy’s recession, which the country is still trying to revive from, the economy has been going off and on with the budget crisis. I think, the weaker the American dollar, the more budgeted the economy will be. For instance, it will save the economy time and money when exchanging goods to foreign country. Being making the dollar weak, the economy will grow into a stable and strong country. And supporting eco-friendly research, i.e. electric cars and solar energy can greatly improve a healthier and prosper society.