When President Trump issued a series of four tweets in response to China's tariff threats Friday morning, Wall Street took a dive.  As Matt Phillips of the New York Times wrote: Stocks fell sharply on Wall Street on Friday after President Trump responded to China's threat of new tariffs on American imports with an angry volley of tweets, helping to push the market to its fourth-straight weekly loss. The S&P 500 dropped 2.6 percent, while the technology-heavy Nasdaq index fell 3 percent. The Dow Jones industrial average declined 2.4 percent. Investors were on edge before trading started after Beijing vowed to answer the Trump administration's next round of tariffs on Chinese goods by increasing tariffs on American imports. Stocks opened trading lower after the announcement, but found their footing and began to move higher. Then, around 11 a.m., Mr. Trump took to Twitter. You can see the dramatic effect on this...(Read Full Post)