Wisconsin Governor Scott Walker made stops in Janesville and Oshkosh Tuesday to share his concerns about President Trump’s plans for tariffs on steel and aluminum imports. This is one of the rare times the Republican governor has opposed the president’s point of view. Business groups and other Republicans warn about the threat of a trade war, bringing with it economic and political consequences. Trump is pushing a 25 percent tariff on steel imports and 10 percent on aluminum from other countries. The tariffs could be imposed within two weeks.