The third rail isn't what it used to be. As the Social Security fund's insolvency nears, more lawmakers are open to tax hikes—even Republicans

(Credit: Kevin Dietsch/Getty Images)

Congress has put off making tough choices on Social Security for years, but the bill is coming due soon, and it’s looking like taxpayers will pick up the tab.

That’s because a small but growing group of lawmakers has signaled openness to shoring up Social Security’s finances by raising more revenue via taxes. The group includes some Republicans, who have traditionally viewed tax hikes as anathema.