By Rick HowlettCongressman John Yarmuth of Louisville says he believes Thursday's health care summit in Washington gave those who watched it a better understanding of the alternatives available for overhauling the system, but there's still a wide gap between Democrats and Republicans on the issue.Yarmuth, a Democrat says GOP lawmakers are holding fast to their belief that overhaul legislation should focus on tort reform, insurance portability and prevention initiatives. "In my opinion, that does not get to the root of the problem, which is that there's no way we will ever be able to deal with the rising cost of health care unless we get everyone into the system and figure out where the real inefficiencies are," he said.Yarmuth says he's optimistic that Congress can go back and produce substantive health care overhaul legislation, but it might happen with no Republicans on board.GOP leaders want Democrats to scrap their proposals and start anew.