The U.S. is signatory to the same Geneva Copyright as the other countries that abide by it. If you are aware of differences, please point out the specific differences.
http://en.wikisource.org/wiki/Univer...8Geneva_Act%29
http://www.wipo.int/edocs/notdocs/en...y_nice_35.html
also:
http://www.wipo.int/edocs/notdocs/en...aty_wct_2.html