MOSINEE, Wisconsin: Donald Trump pledged in Wisconsin on Saturday to throw up unprecedented tariffs and clamp down on immigrants he said are stealing jobs and killing Americans, as he sought to solidify support among working-class and rural whites, a key part of his base. Speaking at a regional airport in Mosinee, a town of about 4,500 people, the Republican presidential candidate warned that even allies like the European Union would face new trade restrictions if he wins the Nov. 5 election against Democratic nominee Kamala Harris.