How to setup user level restrictions in AD FS

Hi,

We are configuring AD FS (federation Services) to access webapplications on a different Zone, wanted to a few things on a high-level.

 These Applications are intended for US users, is it possible at AD FS end to setup restrictions in such a way that if a NON-US user try to access these applications it should not allow or the page should redirect to a page to seek further approvals.

OU level restrictions in other words.

Thanks in Advance,

Sravan