The US says it finally busted the gang behind the most convincing counterfeit dollars in the world

Last week's indictment of the alleged ringleaders of one of the most successful counterfeiting operations in US history offers a rare window into the US Secret Service's far-reaching efforts to combat counterfeit currency. The case centers around a counterfeit $100 bill that's legendary in law enforcement circles. Known to agents as...

http://qz.com