James Hamilton of the University of California, San Diego, and blogger at EconBrowser talks with EconTalk host Russ Roberts about the rising levels of the national debt and the growing Federal budget deficit. What is the possibility of an actual default, or an implicit default where the government prints money to meet its obligations and causes inflation? What might signal an impending default? And what is the long-range forecast for the U.S. government's obligations? Later in the conversation, the subject turns to oil prices, an area of Hamilton's research. Hamilton explores the causes of the increasing price of oil over the last decade and the implications for the economy.