Don't forget to verify that the statute you are using is the current version of the law. The government issues the following disclaimer regarding the version of the U.S. Code on FDSys:
While every effort has been made to ensure that the U.S. Code on FDsys is accurate, those using it for legal research should verify their results against the printed version of the U.S. Code available through the Government Printing Office.
Another alternative is to use a citator such as Shepard's on Lexis or KeyCite on Westlaw to verify that you have the current version of the statute and that it is still good law.