. >>> former democratic congressman bart stupak played a central role in negotiating the compromise that allowed the health care overhaul bill to pass. he joins me now from wisconsin. mr. stupak, good to see you. so here we are on the eve of the u.s. supreme court taking up the argument on the act's constitutionality. the bill was contentious before passing at the time. did you see this supreme court challenge coming, once it was passed? >> well, you figured once the bill passed, they would be a supreme court challenge, because the emotions were running high on both sides. so i'm not surprised about the supreme court challenge. >> okay, what do you see ahead this week -- >> but i do believe the basis -- >> go ahead. >> i think the challenges are more political than legal. i think you have three days of some emotional arguments before the court, but i think when you take a look at the arguments being made, like the individual mandate or the expansion of medicaid, that's all legal. congress acted properly. and i believe at the end of the day, the supreme court will uphold the patient prote

former congressman bart stupak joins me at 2:30 eastern time here in the newsroom. join us then. >>> "the next list" with sanjay gupta starts right now. >> welcome to "the next list." i'm dr. sanjay gupta. you're about to meet hugh herr, he's an innovator, a scientist, and you could call him a bionic man. >> i don't see disability, i really don't. i see bad technology. but i don't see broken people. >> herr invents technology that augment human function, machines that merge with our own bodies. exoskeletons that we wear like pants that allow us to run long distances without getting winded or getting pain. it all starts right here in hugh's bionics group. i'm dr. sanjay gupta and this is "the next list." >> in the biome tronices group here, the mission is to blur the boundaries between humans and machines. >> we attach robots that attach to the body, to the legs that augment a person's physicality. >> why do you call them robots? >> we're developing very advanced systems. i would calm them bionic systems. they're robotic because they have sensors on, various computer