There are many articles to support the theory that the US caused the Haiti earthquake.....From Pravda...
http://english.pravda.ru/science/tech/111809-0/
Snip
The Russian Northern Fleet indicates that the earthquake that devastated Haiti was clearly the result of a test by the U.S. Navy through one of its earthquake weapons and drew up a diagram of linear succession in relation to earthquakes reported to have occurred by chance to the same depth in Venezuela and Honduras.
Snip
As regards the final result of the tests of these weapons, the report warns that there is a U.S. plan to destroy Iran through a series of earthquakes designed to overthrow its current Islamic regime. Additionally, according to the report, the system being tested by the USA (HAARP Project) would also create anomalies in the climate causing floods, droughts and hurricanes.