Democrats plan to offer a resolution in the Senate on Tuesday seeking a timetable for a phased withdrawal from Iraq, California Sen. Dianne Feinstein said on Sunday. Recent polls show a slight majority of Americans favor such a course but White House spokesman Tony Snow said President George W. Bush would not consider it. Setting a timetable "would be an absolute, unmitigated disaster, not merely for the people of Iraq, but the larger war on terror," he said on CNN's "Late Edition."The House of Representatives last week approved a nonbinding resolution which rejected a deadline for U.S. troops to leave Iraq and called the conflict there part of the broader war on terrorism. "Three years and three months and a bogging down, I think, suggests that the time has come for some discussion on where we go from here," Feinstein said, also interviewed on CNN. "I don't know why we are so afraid to stand up and say, 'look, we want to see an end to this thing'," she said.