It's just that it exists at all.

They just wanted to make her birthday special. This is what Chelsea wanted to do.

She loves Oprah, and she's going to be in Chicago for her birthday anyway. What better way to continue to celebrate.

She did not say the president's childhood in any way caused his behavior, nor does she believe that. I think that she was basically stating some feelings about his childhood, but that they do not excuse his behavior.

Clearly, this is not the best day in Mrs. Clinton's life. Well, she was misled ... she learned the nature of his testimony over the weekend.