Interestingly, Mexico's FDI in the U.S. soared by 510% in 2006, while Canada's investments here actually declined by 70%, according to OFII.

FORBES: Magazine Article

According to OFII, the foreign investment estimates include equity capital, reinvested earnings and inter-company debt (U.S. subsidiaries borrowing from foreign parent companies).

FORBES: The World's Buying America

In fact, the U.K., France, the Netherlands, Germany and Japan account for 67% of all direct investment in the U.S, according to OFII.

FORBES: The World's Buying America