The trade deficit represents less than 3% of GDP. Even if we sealed the borders and imported or exported nothing it wouldn't have a meaningful impact on US economy. We aren't as heavily levered to imports & exports as other countries. Also oil (something we simply can't produce more in any significant quantities) is more than half of the trade deficit.
It is something to watch but the doom & gloomers often have it wrong.
The belief that the US makes "nothing" is a common but false meme. The US has the largest industrial base in the world. We make more than any other country. Hell we almost make as much as China & Japan combined. We tend to not make cheap consumer products but we do make a lot. For example we are the largest exporters of aviation products. Not just jets but engines, replacement parts, servicing equipment, avionics, radios, etc.
http://en.wikipedia.org/wiki/List_of_countries_by_GDP_sector_compositionWe also are world leaders in semiconductors, power plant turbines, nuclear reactors, other electronics, heavy machinery, chemical, and telecom equipment.
The US is the 3rd largest exported in the world (behind Germany & China)
http://www.nationmaster.com/graph/eco_exp-economy-exports