PAUL WISEMAN and CHRISTOPHER RUGABER Economics Writers.

President Donald Trump returned to the White House in January determined to overturn decades of American policy and build a tariff wall around a U.S. economy that used to be pretty much wide open to foreign products. In the process of making that a reality, he has rattled financial markets and worried consumers with an ever-changing lineup of import taxes. The pattern goes something like this: He’ll announce new tariffs, then suspend them, then come up with new ones. The uncertainty has paralyzed businesses who don’t know what to expect. And economists worry that the tariffs will push up prices and hurt economic growth. The Associated Press asked for your questions about Trump’s tariffs. Here are a few of them, along with our answers.