"it's a long document. It has twenty-seven articles. And most of them are outrageous. They give the U.S. unprecedented authorities and rights and immunities. Maybe a major point that is related to this discussion is the fact that the agreement legitimizes or legalizes these long-term bases, that indefinite number of U.S. troops will stay there."
This is why Bush in Washington and Maliki in Baghdad didn't want either the US congress of the Iraqi parliament giving this any kind of scrutiny.