Bush Says No Change in SSDI

See this excerpt (via Atrios) from today's NYT article:

He tried to clarify his approach. Responding to questions from the audience here, he told the mother of a mentally retarded adult daughter that there would be no change to the disability portion of the system.

Do you believe him? In the long run, it's going to be hard to maintain SSDI as is when retirement benefits are phased out.