https://theintercept.com/2016/11/10/donald-trump-ran-on-protecting-social-security-but-transition-team-includes-privatizers/
"The SSA cannot unilaterally privatize the program. That takes legislation that Congress has to pass and the president has to sign. But if these are indeed the people the Trump administration is picking to helm the SSA, it’s a signal that he may be far more open to cutting benefits or privatizing the program than he let on."