The Obama administration announced Friday that it has suspended one piece of the landmark health care law which the president signed last year.

Secretary of Health and Human Services Kathleen Sebelius told Congress in a letter that the CLASS Act, which was supposed to provide a new voluntary long-term care insurance program, was unworkable since no actuarially sound way could be figured out to run the program.

“I do not see a viable path forward for CLASS implementation at this time,” Sebelius said in her letter.