Billionaire Koch brothers and their Iran Scandal

ABC News caught David Koch leaving his Park Avenue apartment this week, but the tea party billionaire quickly fled to his car, avoiding questions about a scandal involving his company's trade with Iran.

A recent report in Bloomberg Markets magazine revealed that Koch Industries had been caught paying bribes to win contracts, engaging in possibly-illegal trade with Iran, price fixing, and ignoring environmental regulations.

The magazine also uncovered a Koch Industries document admitting that they had violated federal law.

"It's a document right there on the record, right out of the lips of Koch Industries," Bloomberg Markets reporter David Evans told ABC News.

"I think there are enough of these payments that I think any prosecutor would want to look further," Columbia University Law School professor John Coffee explained. read more