Who is affected and how:

• Future former Presidents: The statute sets a clear compensation package (a $200,000 annuity plus a $200,000 allowance, with COLA), subject to means‑based reduction of the allowance based on taxable income. That creates predictable, statutory payments for persons who leave the presidency after the law takes effect.

• Surviving spouses/widowers of future former Presidents: Survivor coverage is updated to include widowers and will follow the revised benefits framework as set out in the Act.

• Existing former Presidents and their surviving spouses/widowers (on the date of enactment): Explicitly exempted, so their benefits and status remain governed by the prior law.

• GSA and the Secret Service: Tasked with assessing and setting amounts needed for additional security costs and with administrative implementation of payment and reduction rules; this imposes new administrative duties and requires internal processes to handle confidential tax information and cost calculations.

• Taxpayers and federal budgeting: The Act establishes ongoing payment levels (and COLA indexing) for future obligations; while it authorizes payment amounts and directs agencies to set security cost figures, it does not itself appropriate funds. Budgetary impact depends on future appropriations and agency determinations of security costs.

• Privacy and political considerations: Requiring tax‑return disclosure for calculation of allowance reductions raises privacy and transparency considerations; the statute states those returns are to be kept confidential for calculation purposes, but stakeholders may raise concerns about precedent and oversight.

Overall: the law creates a forward‑looking compensation and allowance framework for future former Presidents, clarifies survivor coverage, assigns administrative responsibilities for security cost estimates, and preserves existing protective service rules and funding while exempting persons who are already former Presidents at enactment.