Taxing high earners to help fund Social Security gains bipartisan attention — what it could mean for benefits https://www.cnbc.com/2026/09/13/social-security-payroll-tax-cap.html?taid=6aa6a8a5a004de0001ecc6b8&utm_campaign=trueanthem&utm_content=main&utm_medium=social&utm_source=twitter