It's been 40 years since the social security tax was imposed back in 1984. And the AARP has done nothing to repeal that tax. That seems like it should have been a year after year priority with election targeting of which congress persons failed to support the repeal of the tax.
Luckily, the Trump administration has promised to finally repeal it. Though I doubt it will actually happen. It didn't during his 2016 term.
So ultimately, the AARP needs to show its value by creating a campaign targeting members of congress who do not 100% commit to removing the tax. Did you know the income levels where the tax kicks in are not indexed for inflation? The government very slyly found a way to erode your benefits. The $34,000 income threshold was set back in 1984, would be about $100,000 in today's dollars. Meaning you would pay no Social Security tax until your income exceeded $100,000 for a married couple filing jointly.
See this youtube video that explains it quite well:
The Social Security Trust Fund can easily be funded beyond 2035 by simply raising the FICA cap. No need to raise the FICA tax, just the cap.