Yahoo Finance users view the Trump tariffs dimly

President Donald Trump says his protectionist trade policy will boost the US economy and revive domestic manufacturing. Many savvy investors doubt it. Yahoo Finance ran an online survey asking its audience what they think of Trump's tariffs. So far, Trump has announced a new 10% tariff on Chinese imports and a 25% tariff on most imported steel and aluminum products. He has threatened worse, including 25% tariffs on imports from Canada and Mexico and "reciprocal" tariffs on nations he feels treat the United States unfairly. Wall Street is busy guestimating whether Trump means it or he's just aiming for leverage…