Clinton faces a conundrum. On the one hand, she’s pledged not to raise taxes on the middle class. Instead, she’ll raise taxes on the wealthy — who she has tentatively defined as households earning $250,000 or more. So lifting the payroll tax cap to better finance the Social Security trust fund, which is currently set at around $118,000, might put her in position of defending tax increases on those who are arguably in the middle class.
