Donald Trump has claimed to be a "pro-life" conservative, but on Tuesday the possible 2012 Republican presidential candidate stumbled into an apparent contradiction as he attempted to answer a question on the right to privacy.

During an interview with NBC News' Savannah Guthrie, she asked Trump, “Is there a right to privacy in the Constitution?”

Trump answered, “I guess there is, I guess there is." He then asked Guthrie, "why, just out of curiosity, why do you ask that question?”

Guthrie responded that she wanted to know how that fit in with his pro-life views. Trump told Guthrie that her question was "a pretty strange way" of bringing up the abortion issue. "I mean, it’s a very unique way of asking about pro-life," he said. "What does that have to do with privacy?  How are you equating pro-life with privacy?”

When Guthrie askhim about the the controversial Supreme Court decision Roe v. Wade, Trump said "yes, right, sure," adding he was "strong on pro-life."

The Supreme Court legalized abortion in the landmark 1973 case, reasoning it was a "right to privacy" issue. Pro-life advocates generally claim there is no such right written in the Constitution.

NBC News' "First Read" pointed out that former Republican vice presidential nominee Sarah Palin slipped up on a similar question in 2008.

Trump has already flip-flopped on his abortion position, claiming in years past to be pro-choice. He explained the shift in positions to ABC News' George Stephanopoulos, saying his new position on the issue was based on a friend's experience.

“He would-- did not want a child and his wife didn’t want a child.  And they were going to abort.  And they didn’t do it for very complicated reasons,” Trump said. “And now they have the child.  And it’s the apple of his eye.  And he said, ‘Thank God.’  He changed also, by the way.  ‘Thank God, I didn’t do it.’ And I’ve seen that, and I’ve seen other things.  And I am pro-life.”

CNN noted the misstep "could haunt the potential GOP presidential candidate amongst social conservatives."

Watch the full interview here.