Greg Mankiw's Blog: Who knew what when?: "As someone who has previously worked for a President, I am fascinated by how the White House staff let President Obama so consistently and so publicly make a false statement. Presidential speeches undergo a painstakingly thorough review process. It seems that there are only three possibilities:
1. The White House staff did not know the statement was false. That is, they did not understand the law the administration was promoting.
2. The White House staff knew the statement was false, but they decided to keep this fact from the President. That is, they let the President unwittingly lie to the American people.
3. The White House staff knew the statement was false and told the President so, but the President decided to keep saying it anyway. That is, the President consciously decided to lie to the American people.
These are the only three possibilities I can envision. None of them reflects particularly well on what has been going on in the White House."
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