I heard this too, and a few weeks ago on Fox he was spewing his spiel about making "hard choices" later this year AND next. I would not put it past that SOB to raid people's 401Ks to prop up Social Security.
Actually, it was one of Clinton's henchwomen back in the early 90s that floated the idea....they have been coveting that money for decades and they will get it because it largely won't affect a majority of their ignorant pissant followers (at least as long as the government will give them a regular 'check' of some sort for not working).
That money is the largest untapped cache of funding available anywhere outside of outright printing it backed with nothing. They will take it (their words will be 'invest' it in SS solvency) and they will 'guarantee' you an extra pittance every month when you retire as a 'reward'...these are outright evil people we have in charge here.