[img]http://d.yimg.com/a/p/ap/20100414/capt.e3df1bb65b044b07b221708b7a3ea2d9-e3df1bb65b044b07b221708b7a3ea2d9-0.jpg?x=130&y=86&q=85&sig=ARZ8Hirozr8b_Sc.1UGV4w--[/img]AP - President Barack Obama's national standing has slipped to a new low after his victory on the historic health care overhaul, even in the face of growing signs of economic revival, according to the latest Associated Press-GfK poll.