http://www.socsec.org/publications.asp?pubid=507Myth #1: Social Security is in crisis and facing bankruptcy.
Even if Congress were to leave Social Security untouched, the program would be able to pay currently guaranteed benefits in full until 2042, according to the program's trustees. Thereafter, about 70 percent of promised benefits could be financed. The nonpartisan Congressional Budget Office is even more optimistic: it projects that, without changes, Social Security will be able to meet its obligations in full until 2053, after which about 80 percent of benefits still could be paid for. Even under those worst-case scenarios, decades from now the system would be far from "bankrupt," "flat-out bust," or "broke," which imply that no resources would be available to pay any benefits. At that time, workers and their employers still will be contributing payroll taxes to finance benefits for retirees.
:snip:
Myth #2: Social Security is unsustainable.
Over the course of the next seventy-five years, the gap between promised Social Security benefits and resources available to pay those benefits—the shortfall projected to arise beginning in 2042—is predicted to be about 0.7 percent of gross domestic product (GDP), or $3.7 trillion, according to Social Security's trustees. Without question, that's nothing to sneeze at. But by way of perspective, the tax cuts enacted in 2001 and 2003, if made permanent, would cost nearly three times as much: $11.6 trillion, or 2.0 percent of GDP, according to the Center on Budget and Policy Priorities. Furthermore, the new prescription drug benefit enacted last year will cost more than twice as much as eliminating the Social Security shortfall.
So saying that Social Security isn't "sustainable" or "affordable" is simply wrong. The program's entire seventy-five-year shortfall could be paid for simply by rescinding just a third of the planned tax cuts, which primarily benefit the highest earners—people who would still be paying substantially less to the government than they did in the prosperous 1990s. A myriad other trade-offs are possible as well. But the long-term challenge confronting Social Security is by no means insurmountable.
Myth #3: Social Security's trust funds are filled with worthless IOUs.
When investors become worried about the economy and the stock market, they "flee to safety" by selling their other securities in exchange for U.S. Treasury bonds and bills. Backed by the full faith and credit of the United States government, U.S. Treasury securities are considered to be the safest, most reliable investment worldwide. Because the federal government is legally obligated to pay back interest and principal on those securities, it would take an almost unimaginable calamity for a default to occur. Social Security's trust funds, which now amount to $1.5 trillion and are expected to grow to $5.3 trillion by 2018, hold nothing but U.S. Treasury securities.
The rest of the myths are at the link - both on the page and in a downloadable pdf format. Download the pdf and fire it off to any wingnuts or catfood commission followers who start spouting nonsense.