President Donald Trump capped a tumultuous week in Washington and Wall Street by suspending most of his aggressive tariffs regime for 90 days, acknowledging investors and the general public “were getting a little bit yippy, a little bit afraid.” Trump acted after one of the biggest drops in the stock market since the pandemic. Interest rates on 10-year Treasury bonds were also rising, raising the prospect of an ugly and expensive economic situation. The White House said that at least 75 countries had offered to negotiate new trade deals with the United States since the tariffs were announced, with talks slated to occur during the 90-day hiatus. On April 7 alone, the S&P 500 closed down 0.2% as the Dow Jones Industrial Average fell 0.9%, or by 350 points. The Nasdaq did manage to end...