The Rundown, 9/17

Happy Constitution Day! On this day in 1787, the U.S. Constitution was signed. The National Constitution Center in Philadelphia has events lined up all day; the Georgetown University Law Center will host a Constitution Day discussion and honor the producer of Frontline's "Bush's War"; and the constitution lovers at Cato's Center for Constitutional Studies will hold a symposium on the Supreme Court's October 2008 and 2009 terms, in celebration.

If you're in the DC area, are into health care, and want to hear President Obama talk about it, you're in luck: the president will appear at a rally for health insurance reform at the University of Maryland that's free and open to the public, doors opening at 9 a.m. Wonder what he'll say about the Baucus bill...

Canadian Prime Minister Stephen Harper will be on Capitol Hill today, meeting with Senate Majority Leader Harry Reid and Minority Leader Mitch McConnell. Odds are low that McConnell walks out sold on single-payer, Canadian-style health care...but you never know.

And, a weekly favorite: the Bureau of Labor Statistics will release its statistics on weekly unemployment insurance claims.