Just an employee of the country's real masters
Just like the Bushes, Clinton and Obama
Delving more into conspiracy theories, Killer Mike here is saying that Reagan—as the president—was just a puppet for the real power players in the US and the world. These “real players” could range from corporations to an international governing council like the Illuminati.
Given that Bush I and II, Clinton and Obama were/is president, they also were/are subject to this power structure, whether it is just the influence of the wealthy or something even more sinister like a secret governing body or the anti-christ, as is seemingly suggested by the closing lines of the song.
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