UPDATE: Arizona v. US came down today, somewhat a mixed bag, but overall Obama got most of what he wanted in that case. Basically the heart of the Arizona law was struck down. Certainly not the outcome we'd hoped for. Obamacare will likely come on Thursday, and court experts think there's a high likelihood that Chief Justice Roberts wrote that opinion. That could be good news on how the case will turn out. We'll know later this week.
It's another decision day for the Supreme Court, but I don't expect Obamacare today. They could deliver the Arizona Immigration decision to give everybody time to digest that before Obamacare on Thursday. Everything starts at 10am EDT.
Here are some links to articles about the upcoming Obamacare decision (from Drudge):