You missed the point entirely. We will sell the products to OURSELVES. While at the same time enjoying the income from manufacturing them, too.
This is a stupid argument. The US Economy consists of 1.8 Trillion Dollars in exports vs 2.5 Trillion in imports. Thats 42% of the economy in exports. On top of that nearly 40% of the total income of all US Businesses (and by extension of the employees and shareholders) is based on their foreign investments and sales. So if US closes themselves off US will lose 40% of its total economic output. If you reduce your imports by 50% you will also hurt your exports gained after years of negotiations for free trade. Not only will everything in the US be "slightly expensive" millions of people who work in the export industry will lose their jobs and pay more for locally manufactured goods. And yes, outsourcing or labor export/import is also a way trade. In all, trade benifts the US. Reducing trade will cost big in terms of jobs and standard of living. Saying that get all manufacturing home will fix things ignores exports completely and is downright stupid. More so, when the US markets are growing at 2-4% a year while developing markets are growing at 10% an year meaning in the next few decades the potential for exports in many many times higher than the savings from imports. Trade and economics are not a zero sum game. Even for the mostly technical crowd here at slashdot, think of the major revenue loss Microsoft, Google, IBM, Apple etc. will have if they are hit with tit-for-tat duties in taxes in foreign countries that make them less competitive.