As others have said, you'll need to stand in line. I recommend going in a warmer month if you can. When I was there, it was March 2013, and it snowed/sleeted th

As others have said, you'll need to stand in line. I recommend going in a warmer month if you can. When I was there, it was March 2013, and it snowed/sleeted the morning of. Luckily, at one point they handed out paper tickets designating your place in line and at that point you could go to the closest cafe to warm up. Also, at the time, they only allowed the first 50 people in line to be able to sit in the audience to view the entirety of the oral arguments. No idea if it's still the same 6 years later or not. If you were in spot 51+, you had the opportunity to join a rotating group of audience members who would get to enter the court room and view about 10-15 minutes of arguments, before being escorted back out and replaced with another group.