CEO Tim Cook's capitalization on Trump's quid pro quo approach to the presidency is just smart business. Apple (AAPL -0.92%) shareholders are still celebrating last week's unexpected turn of events in Washington, D.C. After months of worries over ever-costlier tariffs on imported goods -- including its all-important iPhone -- Apple is now (mostly) off the hook. The White House announced on Wednesday that in exchange for an additional $100 billion worth of investment in American manufacturing of the tech use ...