Watch CNBC's full interview with Harvard professor Ken Rogoff

Harvard professor and former IMF chief economist Ken Rogoff joins 'Squawk Box' to discuss the latest in debt ceiling negotiations, why a last minute deal does not solve the underlying political problem, the Fed's rate hike campaign, and more.

Ken Rogoff, Harvard professor and former IMF Chief Economist, joins "Squawk Box" to discuss the latest developments in debt ceiling talks. He discusses why a last-minute deal doesn't solve the political issue and his views on the Fed rate hike campaign.