Here is a column about Obamaspeak that had a few choice quotes:

For connoisseurs of Obama-speak, the address featured a trifecta, combining three of his favorite rhetorical tropes. There was the vague reference to “those who” question his agenda; the “false choice” they use to deceive the public; the determination to “be clear” and forthright, in contrast with those dishonest naysayers.

These devices are useful as signals that the president is about to mislead us.

and of course

From now on, when you hear Obama speak, try replacing “let me be clear” with “let me lie to you,” and see if it makes more sense.