Republicans Lose Another Round
There are many other individual challenges that Frumin has yet to rule on. It's pretty difficult to tell which way the guy will go, though he does work for Democrats. I delved into the Senate Parliamentarian's politics in this story a few weeks ago.
Then, of course, there are the overall challenges by legislators like Rep. Michelle Bachmann (R-Minn.), who just wrote on this blog about her plans to challenge the constitutionality of Obamacare as a whole.