In seeking enough votes to overhaul the nation's health care system, President Barack Obama is telling nervous Democratic lawmakers that their political fates are linked to the bill's passage, discouraging the notion that they can save themselves by opposing it, House members say. They also say the president's not asking lawmakers to save his skin either, while the White House insists that no special favors in exchange for votes are being offered or accepted. The president has pushed aside almost all other matters, including a long-planned Asia trip, now rescheduled for June, to try to embolden House Democrats who have...