A few months ago I told the American people I did not trade arms for hostages. My heart and my best intentions still tell me that's true, but the facts and the evidence tell me it is not

from Killer Mike – Reagan Lyrics on Rap Genius

Meaning

“Because you see, I thought that if I gave them the arms after they gave me the hostages, that that was two separate, unrelated interactions. Apparently, it’s not."
Reagan’s saying that he still stands by what he said earlier about not trading arms to Iran for terrorists, but the facts are that he did.

http://www.youtube.com/watch?v=R67CH-qhXJs

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