The link you provided simply redirects me to the start of the thread. I don’t see any opposition to the unanimously approved UNSCR 1546, which mandates the multinational force at the Iraqi Government’s request. Perhaps you posted a wrong link.
http://www.nytimes.com/2007/05/11/world/middleeast/11cnd-iraq.html?_r=1&oref=slogin
BAGHDAD, May 11 A majority of Iraqs parliament has signed a petition for a legislative timetable governing a withdrawal of American troops from Iraq, several parliamentarians said today.
The petition mirrors the demands by some Democratic lawmakers in Washington for a timetable for the gradual withdrawal of American troops from Iraq
Iraqi Parliament Drafts Law Setting Timetable For U.S. Troops To Withdraw
Top this off with the news just up on Drudge of 100,000 barrels of oil missing a day and Brown revisiting British deployments, I'd say this whole thing about what US supporters want may be a moot point.