The latest spin out of Washington is that stock market declines over the last 10 days are due to Donald Trump’s surge in the polls. Well it is true that Wall Street tends to hate change — even when it’s positive. And if Donald Trump is anything, it is a change agent that will rattle the cages in Washington, and perhaps on Wall Street. Investors didn’t respond at all well to President Reagan until his policies were put in place, the economy rocketed forward, and only then did the greatest bull market expansion in American history get launched in 1982.