Anyone can provide a list of US directory sites list..
Aren't most directories in the U.S.?
Submit Your Webmaster Related Sites to the NB Directory
I swear, by my life and my love of it, that I will never live for the sake of another man, nor ask another man to live for mine.
You can try to visit this site for a huge list of directories..
Web Directories List - Free Directory Submission Tool - Auto Submit To Free Web Directories | One Way Text Links
web-directories.ws I thing so this site help to you.