The Trump administration plans to allow 45,000 additional seasonal guest workers to return to the U.S. this summer, the highest number since the president took office, according to three administration officials. The Department of Homeland Security plans to announce the additional seasonal-worker visas next week, an administration official said. They will become available in two waves: the first 20,000 will be immediately available, while employers can apply for the remainder for jobs beginning June 1. It wasn’t clear whether the White House has fully signed off on the numbers, and an administration official cautioned they could change. The additional visas...