A top Costco executive sounded the alarm on the potential consequences of President-elect Donald Trump’s proposed tariffs — warning that it will raise prices of goods across the board.“When it rains, it rains on everybody,” Gary Millerchip, the chief financial officer of the $447 billion big-box retailer, told investors on an earnings call on Thursday.“Of course, tariffs raise costs. That’s not something that we see as a positive in general.” 4 Business leaders are reacting to President-elect Donald Trump ...