Did Obama say that Medicare is the biggest contributor to the deficit?

[dkf]

26. The payroll tax is only for part A.

http://www.medicare.gov/what-medicare-covers/part-a/what-part-a-covers.html

In general, Part A covers:

Hospital care
Skilled nursing facility care
Nursing home care (as long as custodial care isn't the only care you need)
Hospice
Home health services

It doesn't cover these services which are part B:

Part B provides coverage for doctors services outside the hospital setting and other medical services that Part A doesn't cover. Additional services covered include:

Doctor visits received as an inpatient at a hospital or at a doctor's office, or as an outpatient at a hospital or other health care facility
Medically necessary services or supplies that are needed for the diagnosis or treatment of your medical condition and meet accepted standards of medical practice. (for example, laboratory tests, X-rays, physical therapy or rehabilitation services, etc.)
Ambulance services.
Some home health care.
Preventative services to prevent illness or detect it at an early stage, when treatment is most likely to work best. (for example, pap tests, flu shots, and colorectal cancer screenings)

http://www.medicare.com/medicare-coverage-basics/medicare-part-b.html

Part B doesn't have a payroll tax fund. Instead it has a fund which receives premiums and general fund monies.