(Claire Barrett) Tensions are growing over the potentially harmful effects of a showdown in Congress when it meets on Wednesday to take up the normally benign process of validating the Electoral College votes that would formalize Joe Biden’s election as president. Trump’s call for protests that day in the nation’s capital — and the potential for violence — has sparked fears he would use the chaos to justify invoking the Insurrection Act to deploy U.S. military forces on U.S. soil.