Lyric discussion by screamingtuod 

"America your head's too big, Because America, Your belly's too big ... "

  • greed, politically its imperialistic practices, controlling country governments who are supposed to be independent, big belly for profits and sources of cheap raw materials for its big industries.

"The land of the free, they said, And of opportunity, In a just and a truthful way But where the president, Is never black, female or gay, ..."

  • trying to be the bastion of democracy to the world, waging wars against those he declare as authoritarian, though history has shown its support to dictatorships which America benefits; democratic though discrimination is still prevalent, in short lip service, propaganda-value democracy, deception, etc.

"In America, It brought you the hamburger, Well America you know where, You can shove your hamburger ..."

  • can be about vegetarianism, but generally not just hamburgers, it's colonial rule, more on cultural domination, like though there are some countries who are not natural on burgers or any American commodity, the western media, the all-out propaganda machinery dictates people from different societies to "eat hamburgers" or use American goods, as they are marketed as of better quality compared to their local products.

"And I, I have got nothing, To offer you No-no-no-no-no Just this heart deep and true, Which you say you don't need ..."

  • America says "the hell with your hospitality, I need huge profits". or "your warm welcome is good but I need cash"

"I love you"

  • as America has dominated the world for a long time, and people got used to American culture, system, etc., "I love you" because they have already dug up a deep root to every people, or "I love you" because I don't want you to kill me.

I can't fault your understanding of this song. You get it's lyrical pugnacity and simplicity wonderously well.

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