The government has proposed new rules for the nation's transplant system that aim to increase use of certain donated organs and set additional safety standards for donor groups. The Centers for Medicare and Medicaid Services said on Wednesday that the proposal would strengthen its oversight of groups that retrieve organs from deceased donors. The move comes as donations from the deceased dropped last year for the first time in over a decade. Among the proposals is a step to increase retrieval and use of less-than-perfect organs from older, sicker donors that still could help the right recipient.