DKos has the latest on increasing U.S. public support for a pullout of Iraq, as well as rising sentiment that the war just wasn't worth it:
Gallup finds Americans much more likely to favor reducing U.S. troops in Iraq than increasing or maintaining the status quo. Given a choice of four options, 59% say the United States should withdraw some (31%) or all (28%) of its troops, while 26% say the number should be kept the same as now and 10% say it should be increased.
That is a significant increase in support for troop reduction since the question was last asked. In February, immediately following the Iraqi elections, 49% favored a reduction in the number of U.S. troops in Iraq. The current percentage favoring troop reductions is the highest Gallup has found to date, just slightly above a 57% reading in October 2003.