Elizabeth Birnbaum's departure was first reported as a "firing." Later, a "resignation." When asked for clarity, President Obama told the press corps today he had no idea. "Did she resign," asked CBS White House Correspondent Chip Reid. "Was she fired? Was she forced out? And if so, why?" "I found out about her resignation today," the president answered, "so I don't know the circumstances in which this occurred." An incredulous press corps followed up. "How is it that you didn't know about Ms. Birnbaum's resignation/firing before?" asked another reporter. Mr. Obama: "Well, you're assuming it was a firing. If it...