Hi guys, I am a newbie with Drupal and have been looking around for a solution for this and after seaching for a while, I decided to post here. It does not sound complicated, but I cannot figure out how to do it.

I have a Location category defined as something like :

USA
-Washington
-New York ...etc

I am most interested in getting the user's input on the city name. I need to make sure the user selects only the 2and level (Washington, New York) instead of the Country itself (USA). Is there an easy way to implement this kind of consistency?

Thanks a lot