Raj Rajaratnam, who has both both U.S. and Sri Lankan citizenship, has been arrested for insider trading. He has currentky been released on $100 million dollars bond. Rajaratnam is ranked No. 559 by Forbes magazine as among the world's wealthiest billionaires. His net worth is $1.3 billion.

According to the Federal Election Commission, Raj Rajaratnam is a generous contributor to Democratic candidates and causes. The FEC said he made over $87,000 in contributions to President Barack Obama's campaign.

Billionaire among 6 nabbed in inside trading case - Yahoo! Finance