Does this mean we can crowdsource and buy the private browsing history of our favorite representatives and post them online for everybody to see?
That's a lot of money that could go to other causes like the EFF. Black hat hacking is cheaper and has the potential to reveal much more about the people that voted for this.
This vote will be a lubricant for just such black hat cracking. The Congress opened the barn door on their own members' privacy.
Legally yes. Practically no.
There is no ISP in the business of selling the data for a single individual by name.