Attorneys general from 16 states are challenging the health care legislation that was signed into law by President Obama last month. They're contesting the constitutionality of the law.

John Hockenberry sat down with Colorado Attorney General John Suthers earlier this week, and part of their conversation we're bringing to you here online.  John asked Suthers about the growing numbers of medical marijuana dispensaries in Colorado, the voters' initiatives that Suthers says are being badly stretched to allow this many dispensaries, and his desire to have Colorado voters explicitly vote on what he calls "back door legalization."