(CNN) -- During the White House Correspondents' Dinner on Saturday night, Jimmy Kimmel made a joke that President Obama laughed at, but that you could see was just killing him inside. 

"Mr. President, do you remember when the country rallied around you in hopes of a better tomorrow?" Kimmel asked. "That was hilarious. That was your best one yet." 

Yeah it was. 

I'm sure he still has a lot of hope. But I would dare to say the thing that changed most over these past three years is Obama. The unbridled optimism that his first campaign once embodied has been bludgeoned by dogmatism, pragmatism and bipartisan cronyism. 

Hope and change are tough when the worst economy in 80 years is waiting to greet you at the door. 

Hope and change are challenging when Rush Limbaugh, the unofficial gatekeeper of the conservative movement, tells his troops "I hope Obama fails" before your first day on the job. 

Hope and change are virtually impossible when working with a Congress so dysfunctional that its approval rating never reached 25% in all of 2011 and was as low as 10% in February. 

No wonder his hair is a bit grayer these days. 

And no wonder the new Obama slogan is "Forward." 

"Hope and Change" captured the heart of a people who believed one man could change the culture of Washington. "Forward" acknowledges things are not where he said they would be, but takes ownership of a record that shows he at least has us pointed in the right direction: 12 consecutive months of job losses before he took office, 25 consecutive months and counting of job growth since 2010. 
Who spoke at it?
During the White House Correspondents' Dinner on Saturday night, Jimmy Kimmel