Ben Carson, a candidate for the GOP presidential nomination, on Sunday questioned whether presidents must obey the Supreme Court.

Appearing on Fox News Sunday, Carson, a conservative Christian celebrity opposed to marriage equality, said that it was time to reconsider the Supreme Court's role.

“It is an open question,” Carson said. “It needs to be discussed.”

Host Chris Wallace pointed out that the high court started reviewing the constitutionality of laws in the 1803 case Marbury v. Madison.

“And I have said this is an area that we need to discuss. We need to get into a discussion of this, because it has changed from the original intent,” Carson said.

Carson said that presidents are not obligated to carry out what he called “judicial laws” originating from court rulings.

“The way our constitution is set up, the president or the executive branch is obligated to carry out the laws of the land. The laws of the land, according to our constitution, are provided by the legislative branch. The laws of the land are not provided by the judiciary.”