Add him to the list of Republicans, incluiding Mitt Romney (Stericycle anyone) that were involved at any time with fetal tissue.

"You have to look at the intent," Carson told The Washington Post's Dave Weigel before he began a campaign swing through New Hampshire. "To willfully ignore evidence that you have for some ideological reason is wrong. If you’re killing babies and taking the tissue, that’s a very different thing than taking a dead specimen and keeping a record of it."

If you had to reread that once or twice, you're not alone. It's a very complex — and politically charged — issue.

Carson appears to be saying that the fetal tissue he used for research didn't come from fetuses aborted specifically for use in medical research. He also appears to accuse Planned Parenthood of doing just that. But that's a charge Planned Parenthood has flatly rejected and isn't proved by the videos.