This segment covers the severability argument, i.e., if the mandate is struck down, the remaining portions of Obamacare will be unable to function properly and should then be invalidated.
National Federation of Independent Business v. Sebelius
http://www.supremecourt.gov/oral_arg...rgument=11-393
Transcript:
http://www.supremecourt.gov/oral_arg...pts/11-393.pdf