In this Sept. 1, 2008, file photo, then-Democratic presidential candidate Sen. Barack Obama, D-Ill., speaks at a rally at the Marcus Amphitheater in Milwaukee. Today, he reaches an important milestone date for presidents -- 100 days in office. Story here. (AP Photo/Alex Brandon, FILE)

DFO: Comments by RedMan, Idawa, BlueinIdaho, & Brand X Ranch are included in a roundup of reaction of Obama's first 100 days that begins on the SR's Page One today. Link here.

Question: What is the most significant change that Barack Obama has brought about in his first 100 days in office?