The Democratic Convention takes center stage this week in Philadelphia and trade could be an unexpectedly unifying topic for the Democrats as newly picked vice presidential candidate Sen. Tim Kaine (D-VA) -- like his running mate -- took a swift 180-degree pivot to come out against the Trans-Pacific Partnership. Kaine about-faced on TPP Saturday, only one day after Hillary Clinton announced Kaine as her vice presidential pick. As recent as Thursday , Kaine offered some support of TPP by saying...