<p>For the first time since her 2008 presidential campaign, Hillary Clinton on Saturday evening returned to the set of “Saturday Night Live," starring in a skit as “Val,” an easy-to-talk-to barkeep giving advice to the former secretary of state, played by comedian Kate McKinnon.</p><p>In the skit, Clinton, as “Val,” dressed in a white button down shirt and apron, mocked herself for being slow to announce her current position on the Keystone Pipeline and on gay marriage.