Trouble with SSP/NAU is it's painstakingly slow implimentation. (probably by design) Most Americans have no idea anything is happening.
What steps, other than buying airtime, can the average American take to fight this thing??
I would suggest the following:
1. Continue to raise awareness online and with the people around you.
2. Write authors, analysts, think tanks, etc that are Nationalist minded. (Such as the Center for Security Policy which has just entered the fray) and urge them to report about the issue.
3. Call local, regional, and national talk radio.
4. Write and Call your Senators and Reps.
If we all do this, we will eventually reach critical mass. Already there is some effect as several peices of legislation has been written to stop SPP.gov, the NAFTA Superhighway/Trans-Texas Corridor, etc.
Also, 13 state legislatures are proposing legislation against a SPP/NAU. Even if symbolic, it demonstrates that serious analysts and serious representatives and servants of the People of the United States and the Constitution are against the SPP/NAU.
Go and have lunch with your City Manager. If you live in a small town get the Mayor involved by inviting him too.
Generally these men are too busy to educate themselves about this kind of thing until they require money to fund it. If the big businesses in town are for it, then the politicians are for it too.
Bring out what happens to the Mayors kids and grandkids under this system. You would be surprised how patriotic some of these folks are. They just need the data to fight it with and none of the Councilmen are going to give it to them.