There is a huge gap between how Washington DC views technology and Silicon Valley. If you are interested in the differences check out Stacey Higginbotham's post on her experience visiting a Washington DC conference.
This is a good summary of the difference.
What i would add is Silicon Valley will be much more interested in what the technology does and how it works. Washington DC is more interested in the impact of technology which can be much harder to articulate and fits in their perspective of how to regulate the use of technology.