By Lorie Konish

Copyright cnbc

To be sure, any such change would have to be enacted by Congress. Democrats have largely rejected suggestions to raise the Social Security retirement age. “For every year you raise the age, that is a 7 percent cut in benefits,” Rep. John Larson, D-Conn., said in a Sept. 18 statement.

Yet suggestions of raising the retirement age continue to come up.

In December, Sen. Rand Paul, R-Ky., proposed an amendment to the Social Security Fairness Act that would raise the full retirement age to 70. That proposal did not pass.

A December Congressional Budget Office analysis found moving the full retirement age to 70 would not fully address the program’s 75-year shortfall.

Denmark recently pushed its retirement age to 70.

Yet some experts say it would be a stretch for the U.S. to follow its cue, since U.S. poverty rates are higher, leading life expectancy increases to be spread unevenly.

“There are increasing concerns in recent years about an across-the-board increase to the retirement age, given the disparities in longevity between higher earners and lower earners, folks with higher education levels and lower education levels,” Sprick said.