President Obama began his last press conference as president Wednesday by thanking the reporters who assembled week after week to pepper him with questions. "Some of you have been covering me for a long time," Obama said. "I have enjoyed working with all of you. That does not of course mean that I have enjoyed every story that you have filed, but that's the point of this relationship. You're not supposed to be sycophants, you're supposed to be skeptics, you're supposed to ask me tough questions. You're not supposed to be complimentary."