The S&P 500 (SNPINDEX: ^GSPC) has plunged by as much as 20% since hitting a record high just two months ago. President Donald Trump enacted sweeping tariffs on all of America’s trading partners last week, and many countries responded with plans for retaliatory tariffs of their own, which is stoking fears of a global trade war. The iShares U.S. Tech Independence Focused ETF (NYSEMKT: IETC) is a unique exchange-traded fund (ETF) that invests exclusively in American companies with a high proportion of their production, technological capabilities, and revenue inside the U.S. It holds many of the stocks that are leading the artificial intelligence (AI) race.