Senate OKs delay of digital TV transition

From CNN.com:

Senate OKs delay of digital TV transition: Overcoming partisan divisions, the Senate on Monday night unanimously voted to delay the digital television transition until June 12

This is a mistake, and is the same reason that we’re still not on the metric system. Everyone is ready, the die is cast, it’s a done deal. We’re only 3 weeks away from completing the transition. Why do politicians do things like this?