Chief Justice John Roberts, Justices Samuel Alito and Justice Anthony Kennedy on Tuesday asked the Obama administration's lawyer questions about the limits of federal power if the health care law's individual mandate is upheld.
Roberts asked if Congress can require people to buy cellphones in order to make sure they can get emergency assistance when they need it. Alito asked a similar question regarding burial services, given that everyone will eventually need it in some form or another
Kennedy asked whether Congress has a "heavy burden to show" before requiring people to buy a product.
Both Roberts and Kennedy did, however, appear sympathetic regarding the proximity of health insurance regulation to the interstate market, which is critical to the constitutional question.
Meanwhile, following the end of oral arguments, CNN Legal Analyst Jeffrey Toobin said on CNN that based on what he heard inside the Court, things didn't look good for proponents of the law.
"This was a train wreck for the Obama administration," he said. "This law looks like it's going to be struck down. I'm telling you, all of the predictions including mine that the justices would not have a problem with this law were wrong... if I had to bet today I would bet that this court is going to strike down the individual mandate."