By not accepting McCain’s invitation to go with him to Washington to do what US Senators are elected and paid to do he is making a big gamble. He is betting everything that whatever solution comes out of Washington FAILS! A massive failure at this point would be hung like a millstone around McCain’s neck and Obama will have satisfactorily distanced himself from the process. If the measure succeeds, however, McCain will be seen as being part of the solution and Obama, again, distanced from the solution. Hence, Obama is hoping for failure, nay, he’s betting on it.