Barring no delays inbound DCA-YYZ (glad US furlough is over!) you should be able to easily make the connection as other posters have pointed out. Are you in J going DCA-YYZ? I agree with other posters. If your aircraft is the small CRJ definitely switch to an earlier flight with larger aircraft to allow a longer connection. Well worth it and you get to relax at the int'l MLL.