Wall Street puts finishing touch on best week since March

Wall Street rose on Friday and capped off its strongest week since March after U.S. Federal Reserve Chair Janet Yellen said an interest-rate hike would likely be appropriate "in the coming months." Yellen's is the most important voice in a chorus of policymakers recently suggesting that the U.S. economy has improved enough to warrant tighter borrowing costs, with a growing number of investors now expecting a hike in June or July. "As we look at our place in the global economy, things just seem t