I think you might still be missing the point. "America" does not hold elections. "America" is a set of two continents (North and South America). The United States of America is 1 nation on the continent of North America. So when people talk about the USA and refer to it as "America", it's kind of like if people talking about the UK referred to it as "Europe".

The whole point of it was to criticize how USA-centric USians are by completely discounting that they are 1 country of many on the American continents. This is so much the case that it seems to confuse some people who think that "America" and "The United States of America" are synonyms.

edit: err, maybe you do get it? I can't tell. I didn't get much "melting pot" from it and thought it was more a celebration of Puerto Rico with a little bit of "get over yourselves mainland US. The rest of the Americas are pretty sick too in their unique ways