Jamie Dimon says the US economy is holding a “royal straight flush.” The JPMorgan Chase CEO, speaking this week at a New York Stock Exchange event marking the launch of the latest Fortune 500 list, detailed what he says is the country’s strong hand: the world’s strongest military, best businesses, most entrepreneurial workforce and deepest capital markets. Dimon is one of the most high-profile executives on Wall Street — and has been the target of popular anger in the aftermath of the financial crisis and Washington bailouts of Wall Street. He says it rolls off his back. But he has less tolerance for attacks on big business. “It denigrates some of the best things in America, and it hurts business and consumer confidence,” he said.