He will say its their fault he can't get the economy going. The MSM will reinforce his message.
It will become the #1 talking point of every democRAT.
That doesn’t explain why he is determined to do this in front of a joint session of Congress instead of from the Oval Office or at some Labor Day speech. There’s only one reason to do it in front of Congress — to appear superior to them by being the only one allowed to speak while they are forced to sit politely and listen.