On the first of three days of arguments, the court considered a challenge from an outside attorney that the 1867 Anti-Injunction Act—which prohibits individuals from challenging a tax in court before it is enforced—prevents the Supreme Court from deciding on health care reform's legality before 2015.
You can listen to the arguments below, and download the audio at the Court's website.
Read Yahoo! News' full coverage of the case at The Ticket.
More popular Yahoo! News stories:
Want more of our best political stories? Visit The Ticket or connect with us on Facebook, follow us on Twitter, or add us on Tumblr. Handy with a camera? Join our Election 2012 Flickr group to submit your photos of the campaign in action.