Oral arguments on the Affordable Care Act have begun before the high court . The justices will hear oral argument in King v. Burwell and decide whether to uphold or strike down key parts of Obamacare. Justices on Monday seemed skeptical about tax arguments . Orentlicher says Tuesday 's arguments about commerce power is more important . Seventy years of precedents provide strong grounds for upholding health law , he says .
Oral arguments on the Affordable Care Act have begun before the high court . David Orentlicher : Justices on Monday seemed skeptical about tax arguments . Orentlicher says Tuesday 's arguments about commerce power is more important . Seventy years of precedents provide strong grounds for upholding health law , he says .