5. Exxon Mobil
Untaxed foreign profit: $35 billion
Despite the economic downturn, Exxon Mobil invested a record $32.2 billion in energy projects in the U.S. and around the world in 2010. The oil giant anticipates global energy demand will increase by 35% by 2030 compared to 2005 levels -- which is why it plans to invest more than $125 billion over the next five years in new projects.
As with any oil conglomerate, Exxon does most of its business on international soil. More than 80% of the company's 2009 earnings came from outside the U.S.
NEXT: Citigroup
Last updated April 14 2011: 3:59 PM ET
