A change of heart by President Trump on his nominee for Director of National Intelligence. The U.S. announces new tariffs on China as a trade deal between the two countries remains in limbo. The Federal Reserve cuts interest rates. Osama bin Laden's son is killed. The president holds a rally as his re-election campaign continues. Plus -- the massive field of Democratic presidential candidates takes part in two nights of debate in Detroit. CBS News Correspondent Steve Dorsey will have these stories and more on the CBS News Weekend Roundup.