Obama calls possible SCOTUS ruling against Obamacare "unprecedented." In 2007, criticized SCOTUS failure to overturn Partial Birth Abortion Ban.

President Obama said this about a possible SCOTUS overturning of Obamacare:

Ultimately, I’m confident that the Supreme Court will not take what would be an unprecedented extraordinary step of overturning a law that was passed by a strong majority of a democratically elected congress.

The Partial Birth Abortion Ban Act of 2003 passed the Senate 64-33 and the House 281-140 in bipartisan votes. Obamacare was much closer, especially in the House, and failed to get a single Republican vote. In 2007, Senator Obama was upset that the Supreme Court didn't overturn the Partial Birth Abortion Ban Act in spite of the fact it was passed by a strong majority of a democratically elected congress.

 “I strongly disagree with today’s Supreme Court ruling, which dramatically departs from previous precedents safeguarding the health of pregnant women.  As Justice Ginsburg emphasized in her dissenting opinion, this ruling signals an alarming willingness on the part of the conservative majority to disregard its prior rulings respecting a woman’s medical concerns and the very personal decisions between a doctor and patient.  I am extremely concerned that this ruling will embolden state legislatures to enact further measures to restrict a woman’s right to choose, and that the conservative Supreme Court justices will look for other opportunities to erode Roe v. Wade, which is established federal law and a matter of equal rights for women.”
     —Senator Barack Obama (D-IL), 4/18/2007