Senate Minority Leader Mitch McConnell blasted President Obama on Thursday, telling him to "back off" from comments earlier this week where he appeared to question the constitutional powers of the Supreme Court and the possibility that it could overturn his health care law.

"The president crossed a dangerous line this week," the Kentucky Republican said to the Lexington Rotary Club, "and anyone who cares about liberty needs to call him out on it. The independence of the court must be defended."