Update: Arguments from the first day have concluded and, according to the New York Times, the hearing consisted of a "90-minute debate over whether the Court yet has the authority to hear the case."
"Lawyers for both the Obama administration and challengers to the law took the same side on this question, arguing that the Court could hear the case now," the Times reports. "The justices appeared receptive, suggesting that they will reject the argument made by an outside lawyer that it is too soon to rule."
* * *
The Supreme Court began hearing oral arguments this morning that will determine if the Patient Protection and Affordable Care Act of 2010 (otherwise known as Obamacare) violates the Constitution. The arguments are expected to last three days and will analyze the legality of several key aspects of the bill.