Here’s an easy to understand example of how Donald Trump’s tariffs on imported products have completely screwed small U.S. businesses and entrepreneurs: the crowdfunding site Kickstarter is introducing a “Tariff Manager tool” that will allow creators to add extra charges to projects that were already fully funded in order to deal with the higher and unexpected costs of the president’s global trade war. “Over the past few weeks, we’ve been hard at work developing tariff-relevant resources to supp...