Asher Karni was sentenced August 4 to three years in federal prison for his role in a plot to export nuclear weapons parts to Pakistan. U.S. District Judge Ricardo M. Urbina handed down the sentence after Karni pled guilty last year to helping ship devices that could be used to test, develop and detonate nuclear weapons.

Correspondent Mark Schapiro probes the case of a South African businessman who attempted to export 200 nuclear bomb triggers from the U.S. to Pakistan via Cape Town.

Peter Jennings examines the government's effort to harness technology in the name of security and the price we might pay if we fail to balance security and freedom in the digital age.

The average American family today carries eight credit cards. Credit card debt and personal bankruptcies are now at an all time high. With no legal limit on the amount of interest or fees that can be charged, credit cards have become the most profitable sector of the American banking industry: more than $30 billion in profits last year alone.