The latest issue of Smart Money explains that bonds and currency linked to Singapore are attracting a “growing herd of American investors.”

Singapore boasts one of the world’s highest savings rates and biggest trade surpluses — along with a AAA credit rating, which many developed nations, including the U.S., no longer possess.

Another key to Singapore’s success? Economic freedom. Singapore ranks No. 2 (trailing only Hong Kong) in the Fraser Institute’s Economic Freedom of the World 2011 annual report, a report Southern Methodist University economist Robert Lawson discussed last fall at Campbell University.