The second part of our "Tough Choices" series takes a look at the current state of the Medicare program in the US. The health insurance program for the elderly and disabled continues to spend more on benefits than it takes in, leaving political parties at odds on how to rectify the situation. Host: Lark McCarthy. Guests Include: Dr. Robert Moffit, a Senior Fellow on Domestic and Economic Policy Studies at the Heritage Foundation, and Dr. Henry Aaron, the Senior Fellow on Economic Studies at the Brookings Institution.