Tip - The U.S. economy is showing cracks

America's job market is surging ahead, but consumers and businesses still aren't spending much. It could just be another winter blip -- or a red flag.
Tags: u.s. economy, china, japan, greece, yemen, fed rate hike, consumer confidence, consumer spending, exports, retail sales, caterpillar, microsoft, S&P 500 , stocks, stock market, earnings