My husband is waiting until 70 for delayed retirement credit. He has an ex-wife who will be filing under his record as she is allowed to do. If she files earlier than him, does that jeopardize his increases promised for delayed retirement?
No, regardless of when or if your husband's ex-wife's receives benefits on his record, it won't have any effect on his delayed retirement credits. Nor would her entitlement have any effect on what you could potentially receive as a spouse on your husband's record.