Find out who is running for Congress in your district. Include any viable candidates for both major parties (if any). Talk to them about their views, let them know that disbanding the TSA is a major issue for you, and that you'll support any candidate who takes a stand on this, and oppose any who don't.

If you find a viable major party candidate[1] who will come out in favor of disbanding the TSA, then follow through and support him. This will require money or time (or ideally, both).

If you cannot find any viable major party candidates, consider running yourself. Every two years new people get into the House because of incumbents ignoring the concerns of their constituents.

Either way, once you've done all you can in your district to try and get a congress-critter elected who will publicly back repeal of the TSA, the next step is to try and help on a national level. This takes money.

Talk to non-profit civil rights groups to see if they will advocate for repeal of the TSA. Don't limit yourself to one side of the political aisle! Talk to the ACLU, talk to CAP, talk to Heartland, talk to Cato, talk to anyone you can find who will listen who is or might be even tangentially interested in TSA repeal. Make sure to mention that you will donate large amounts of money. If you can't find anyone, start your own.

Once you've found (or founded) a national think tank or pressure group, you now need to follow through. Donating time helps, but money helps a lot more. Hopefully you can scrape together $10k or more for this. If you can't, start talking to your friends. Don't just blog about how the TSA is terrible, blog about how you're trying to get together $50k or $200k to bring about real change. Nobody cares about people commenting about how outraged they are on a blog; they care about money.

Everyone loves to talk about how terrible it is that money is important in American politics, and maybe it IS terrible. But the great thing about money is that it's blind. It doesn't matter who you know or what school you went to or who your father was[2]. If you can scrape together 5-6 figures to throw at a political issue you can have a real impact on almost any issue in the US[3].

In other words, the tangible actions you can take are, well, ANY tangible actions. Talk to sympathetic politicians and interest groups. If you can't find sympathetic politicians and interest groups, start your own. Either way, acquire and spend money on this. Blogging, commenting, and signing petitions are almost the definition of non-tangible actions in the current political system.

[1]: Fringe candidates for the major parties, or minor party candidates, do not - in the US system - have a major impact on policy. You may decry this fact, but it's the way it is. Pick your battles. Either lobby for TSA repeal OR a shift to proportional representation.

[2]: I've lived in a few countries. My experience is that money matters a lot more in US politics, but that doesn't make the US less fair or more corrupt. Americans often seem to think that if they could get money out of the system, everything would work better. I wish I thought it was that easy.

[3]: Again, you may decry this fact, but it's the way it is. Pick your battles. Either lobby for TSA repeal OR meaningful campaign finance reform.