President Obama was unable to attend Tuesday's ceremony commemorating the 150th anniversary of the Gettysburg Address because of scheduling issues stemming from the rollout of his signature healthcare law, the White House said Tuesday. Following stories questioning why the president had skipped the event, given his public affinity for President Lincoln, White House senior adviser Dan Pfeiffer tweeted that "it didn't work schedule-wise." In response to a journalist's Twitter query about what could be more important, Pfeiffer wrote: "Oh, I don't know, there's this whole website thing that someone suggested might destroy the [Democratic] Party." According to the president's public...