Social Security could be brought into actuarial balance over the next 75 years in various ways, including an immediate increase of 16 percent in payroll tax revenues or an immediate reduction in benefits of 13 percent or some combination of the two.
Roughly, this would require increasing both the employee and employer share of the tax from 6.2% to 7.05% (there might be some employment/wage impacts of such a change so this is a rough take).
A small price to pay to ensure Robert Samuelson never writes another column.