House Republicans’ “one, big, beautiful” tax bill includes a new temporary $4,000 deduction for older adults. The change, called a “bonus” in the legislation, is aimed at helping retirees keep more money in their pockets and provides an alternative to the idea of eliminating taxes on Social Security benefits, which President Donald Trump and other lawmakers have touted. The temporary provision would apply to tax years 2025 through 2028. The deduction would start to phase out for single filers with more than $75,000 in modified adjusted gross income, and for married couples who file jointly with more than $150,000. As...