His lashing out at the upscale department store seems to reflect an approach to industrial policy that often brings unintended consequences.<br />Trump’s Defense of Ivanka Reflects Approach That Could Hurt the Economy -<br />Get the Upshot in your Inbox<br />Ivanka Trump’s business just absorbed some blows.<br />Such actions, if meant to disrupt Nordstrom’s business, could be a signal to other retailers<br />that it’ll be costly to cut off existing business relationships with the Trump family.<br />And his son Donald Trump Jr. followed up with reports that supporters were planning to boycott the store.