A fourth individual stepped down from President Donald Trump's manufacturing advisory council on Tuesday in the wake of his response to violence in Charlottesville, Va. The latest to exit is Scott Paul, head of the Alliance for American Manufacturing, a partnership between manufacturers and the United Steelworkers union. Paul said on Twitter it was "the right thing for him to do." He joins the chief executives of Merck & Co. MRK, +0.19% , Intel Corp. INTC, -0.85% and Under Armour Inc. UA, -3.64% in quitting the council. Trump said in a tweet shortly before Paul's that he has "many" CEOs to replace those who leave.