elizabeth prann with the details of washington. >> reporter: after a misstep in an interview about the iraq invasion republican presidential candidates both official and not are being pressed on the skigs of taking the country to war in hindsight. that includes florida senator marco rubio. he sat down with chris wallace. >> the question is if it's a mistake. i still say it was not a mistake because the president was presented with intelligence that said iraq had weapons of mass destruction. it was governed by a man who committed atrocities in the past. >> reporter: critics say he said it made sense to invade in 2003. there you him saying that was a respongs to invade without today's knowledge. different question. wi we governor walker also took on the hindsight question. >> i think it's pretty any president have the information they have probably made the same decision george bush did. hillary clinton voted for it as