Interesting article on clear regulatory trend re email, in this case in the state that is home to Vegas. See "Nevada law on encryption appears to affect more than just e-mail".
Source: http://devcentral.f5.com/weblogs/macvittie/archive/2008/09/25/nevada-law-on-encryption-appears-to-affect-more-than-just.aspx
Disclaimer: for general discussion purposes