National WolfWatcher Coalition (NWC) is offering some guidance.
In speaking with several environmental staffers in Washington DC in the last year, the NWC learned that postcards are a noticeable means by which citizens can make their voices heard because they are unique, brief and easily accepted via mail. Thus, NWC encourages wildlife supporters across the nation to send a unique postcard, along with a brief statement in support of the ESA, from your location to a select number of pro-environmental and moderate (on-the-fence) representatives in Congress.
For some sample talking points and additional resources, please visit United Postcard Campaign page on the NWC's website.
To learn more about the ESA and the threats this law faces, please listen to Defenders of Wildlife's Robert Dewey in an interview from last month.