As of August 1st, 2008,
The .US Registry policy for Registrars states the following:
"No registrar, nor any of its resellers, affiliates, partners and/or contractors shall be permitted to offer anonymous or proxy domain name registration services which prevent the Registry from having and displaying the true and accurate data elements contained in Section 3.3 for any Registered Name." (http://www.neustar.us/us-privacy-statement-v-2/)
*As a reminder.
The .us Registry does check the whois information for your domain. If you omit or falsify the whois information they will issue you a warning. If your domain does not come into compliance they will seize your domain and you will not get a refund.
