Donald Trump promised tax-free Social Security for seniors. So what’s the holdup?

And the number of seniors who are continuing to pay into the program is rising due to a combination of factors — one of which is that, while Social Security benefits get an annual cost-of-living adjustment, the thresholds for combined income have not been adjusted since 1993.Social Security gets most of its funding from payroll tax revenue, according to the SSA, but the program also gets money by taxing some seniors on their monthly benefits.The reality is that completely eliminating taxes on Social Securit ...