One trillion dollars over ten years for some health care proposals is claimed as an excessive cost by critics of those proposals. These same critics generally look on government spending as expenses without any return.
Consider that the U.S. spends over two trillion dollars each year and the rate is rising at over six percent per year. See "Health Care in the United States", Wikipedia. If a universal health care system costs one trillion over ten years, that sounds like quite an improvement of over twenty million for the same span of time.