President Donald Trump's steepest tariffs fell into legal limbo this week, casting uncertainty over a major swath of the president's signature economic policy. The Trump administration could ultimately prevail in a court battle over the levies or seek other legal authorities to reimpose some of the tariffs,

The Trump administration immediately appealed that ruling, and less than 24 hours later, the appeals court said, "We're going to allow you to continue to levy these tariffs while this appeal plays ou...