I believe you want USC: Title 8, 1324(b). Although all of 1324 is just a wealth of info. Pass it around :-) http://www.law.cornell.edu/uscode/html/uscode08/usc_sec_08_00001324----000-.html
argh - http://www.law.emory.edu/10circuit/may96/95-2142.wpd.html
Oh perfect, thanks! :)