From the be nice while he visits, stab him in the back when he leaves department:

Harper attacks Liberals, Obama in private speech to party (March 13 2009 - Jennifer Ditchburn, CP via The Star):

[Stephen Harper] twice pointed disdainfully to tax hikes U.S. President Barack Obama introduced for the highest tax brackets.

Mike Brock, a Conservative blogger who attended the conference, called the speech bewildering.

"The treatment to classical liberals and libertarians – of which I consider myself – was nothing short of stunning," he wrote. "The condescension was literally dripping from his mouth. Was this his response to the disillusionment that libertarians across the country have had to his government and its policies of late?

"If it was, it did not build any bridges. Rather, it burnt them right down."

"We have tried going out and selling things we don't believe in – how's that working?" Tom Long, former Canadian Alliance leadership candidate