westchest w. bush. what was his biggest contribution to health care? >> i worked with him on education. the biggest contribution to health care was the american for disabilities act. that -- that helped millions of americans and american families. >> senator alexander, yesterday you gave a floor speech where you said up to half of health care spending is unnecessary, that is a bold stat. how do you defend that? >> well i defend it because we've had five hearings on reducing health care costs and dr. brett james, who is a member of the american academy of medicine said that. he said 30% to 50% of what we spend on health care is unnecessary. so i was so startled by that that i asked the other witnesses, and they agreed with him. and i asked the next panel and they agreed with him too. that means of the huge amount we spend on health care, that we waste an amount of money and -- in the proseiss -- precisely spend money for every country. and so my focus over the next two years if i'm chairman of the health committee is to see if we could do one or two big