Sign language interpreters are key to enhancing communication between deaf and hearing people. They are seen with political speeches, in churches, in theatres, and in any place where communication to a large audience is important. The main foundation in the United States for facilitating such communication is the Registry of Interpreters for the Deaf:

Registry of Interpreters for the Deaf, Inc.
On the web: www.rid.org
8630 Fenton Street Suite 324, Silver Spring, MD 20910
301/608-0050 (v/tty), 301/608-0562 (tty), 301/608-0508 (fax)