We can start with the 2011 State of the Union Address
Here's the quote: "To put us on solid ground, we should also find a bipartisan solution to strengthen Social Security for future generations. We must do it without putting at risk current retirees, the most vulnerable, or people with disabilities; without slashing benefits for future generations; and without subjecting Americans' guaranteed retirement income to the whims of the stock market."
So we need to cut it, but not slash it, for future generations. Obama kept using this cute phraseology after the SOTU, until he got busted by the press:
Obama demanded Social Security cuts. That's awful.
And when we take into account the other maneuverings - Obama's Simpson-Bowles commission, repeated untruths about the original purpose of Social Security, bizarre assumption used by Obama's Social Security Trustees that force pessimistic projections, etc... It's bad, bad stuff.