We'll be live-blogging President Barack Obama's today to the American Medical Association in Chicago.

The president will be speaking to one of the most important constituencies in the health-care reform debate. The AMA has torpedoed past attempts at reform. It has even been credited with coining the phrase "socialized medicine" decades ago to derail efforts at an expanded government role in health care.

While many doctors support the idea of an expanded public insurance program to insure the currently uninsured, the AMA is opposed to that idea.

The president is unable to win over the AMA today on that idea. The doctors will be listening to see what the president says about medical liability reform. Many physicians will tell you they practice defensive medicine, ordering extra tests, to protect themselves in the case of lawsuits. The president will speak to this issue in broad terms but not offer any detailed proposal in this area.