Thanks to Clinton, your Social Security is taxed under the present system. This is basically a sales tax so you can control your tax rate by controlling your discretionary spending.
under the present system a max of half of social security income can be taxed and it is taxed at your marginal rate, in my case 10% for a max tax on my expected social security payments of about $950. under the fair tax system assuming i spend my social security payments the full amount would be taxed at approximately 23% for a total tax of about $4000 on social security payments alone.
as i said, they will have to fix this or it won't fly.