He said so himself in his press conference, this morning, while telegraphing to his media toadies how to report any bad economic news for the rest of the year:
“Every time that we get a piece of economic news over the next month, next two months, next six months – as long as this sequester’s in place, we’ll know that that economic news could have been better if Congress (read Republicans) had not failed to act.”
Start at 2:35, (or go ahead and watch the whole thing if you’ve taken your blood pressure medicine):