https://www.ssa.gov/benefits/retirement/planner/wep.html
If you are eligible for a pension based on work you did for a federal, state, or local government, a nonprofit organization, or in another country and you did not pay Social Security taxes, this pension can affect the amount of your Social Security benefits. We refer to this reduction as the Windfall Elimination Provision, or WEP.
If you paid Social Security taxes on 30 years of substantial earnings, WEP does not apply to you.
