The "Senior Citizens Tax Elimination Act" proposes to repeal the federal income taxation of Social Security benefits by amending the Internal Revenue Code of 1986. Specifically, it adds a new subsection to Section 86, ensuring that Social Security benefits are no longer included in gross income for any taxable year beginning after the bill's enactment. To prevent any negative impact on the Social Security Trust Funds or Railroad Retirement Act funds, the bill mandates an appropriation from the general Treasury to cover any reduction in transfers to these funds resulting from the tax repeal. Congress also expresses its intent that tax increases will not be utilized to provide the revenue necessary for these appropriations, aiming to protect the financial integrity of the benefit programs without imposing new taxes.