Arizona bans foreign law from use in state courts:

Bill: HB2064

Signed into law in 2011 by Gov. Jan Brewer, HB2064 says that the legislature intends that the public policy of this state is to protect its citizens from the application of foreign laws when the application of a foreign law will result in the violation of a right guaranteed by the constitution of this state or of the United States or conflict with the laws of this state.

Also: “States Move to Ban Sharia Law”

“American laws for American courts”

“Bans on court use of sharia/international law: 33 bills in 20 states to start 2012; review of all efforts since 2010”