Ok, so if America is in some respects like the Portugese colonization of Mozambique, then where is the actual colonial power.
Good question, and I've answered it somewhere in the archives, but I'll reiterate it. America is a settler and colonial state even now, but the head of it is the confluence of business and state power which makes up the federal government and the corporate world. The American Constitution, set up after some years of experiments with true democracy, largely recreates the colonial authority of England in the role and structure of the federal government in relation to the states.
We're still under the yoke of authority, but we may be, to use a gross generalization, be more like the Empire of Brazil than the relationship between Spain and Mexico, for instance.