Contact your political party committees. They can write their state and federal representatives. They can pass resolutions of support and pass them on to their state and federal committees to be included as platforms. It is best to contact them in person, second best by phone. Mail and e-mail is often responded to with form letters from staff.
Hand written letters can be most effective.
Attend County, Town, and Village board meetings. Your presence is effective and motivational. Support and protect all local businesses. Reverse soliciting phone calls. Post a sign in your yard - signs prompt questions about the land claim.