MIT's Simon Johnson: 'Revenue key to reduce US deficit'
10 April 2012 Last updated at 03:15 BST
The BBC's Katty Kay speaks to MIT Professor Simon Johnson about his new book White House Burning and the way forward for the US economy.
Getting Washington's fiscal house in order is key to the continued power and prestige of the US, Mr Johnson argues.
He emphasises that what the US government needs most is revenue.