Lewisville-based Institute for Policy Innovation -- the Dick Armey-founded "non-profit, non-partisan public policy 'think tank'" -- will be in D.C. this week, hosting a chitchat at the National Press Club called "Trade and the Race for the White House: Exploring the Candidates' Positions." John McCain's sending someone: a former director of the Congressional Budget Office. Barack Obama's sending someone: a former assistant to President Bill Clinton for International Economic Policy. But Hillary Clinton's thus far declined the invite and ain't sending anyone. Which is why the IPI's sending out a media release asking a variation on our favorite question: "Where's Hillary?" With Greggo, maybe? --Robert Wilonsky