Your Zip + 4 is used to determine your congressional district.
In recent years the House of Representatives has implemented a policy whereby Representatives only accept correspondence from constituents within their district and therefore we are no longer able to send individual emails to Congress on your behalf. After clicking the Action Alert's "Send" button we have provided you with the ability to copy the Alert's message and to select the "Contact/email" link under the "Contact Member" column for your Senators and/or Representatives.
Since we can no longer send emails on your behalf, we have implemented a function to fax the Action Alert to your representative on your behalf.
If your Zip + 4 is not provided all of your states' representatives will be listed and a fax will NOT be sent.