Iraq's majority Shiites draw a line in acquiescing to continued occupation by the US. They want a fixed timeline for an exit - what Palin wanted in 2006 - before agreeing to the new SOFA. They are now in direct opposition to John McCain. And they want more legal jurisdiction over US troops:
If the conditions are not met, "I cannot see that this agreement will see the light," said Sami al-Askeri, a Shiite parliamentarian and political adviser to Prime Minister Nouri al-Maliki...
Askeri said the possibility of an extension raised concerns among members of the Shiite bloc, who met on Saturday night. "Some people say, what's going on?" he said. "This article opens the door to the next government" of Iraq to lengthen the U.S. troops' stay, he said.
Iraqis are as impatient as many Americans. If this is not an empire, why would we want to stay past the deadline the occupied country wants?