Coprolites from Oregon date to 14,000 BP, have human DNA in them, and were found alongside artifacts. This is getting a lot of press. Archaeology Magazine sent an editor to talk to the researchers.
On a related note, I attended part of the session at the Society for American Archaeology meetings, on the asteroid hypothesis, that eastern North America was devastated in 12,900 BP by an impact that also created the Younger Dryas. It was jampacked with people, standing room only with many being turned away, the likes of which I've never seen at a conference before. Many of those people were younger undergraduate or graduate students. There is obvious interest I couldn't stay that long, I had people to see and the packed room was tiring (a good 15 degrees warmer than the hallway outside, due to body heat). But from what I saw, it once again seemed like the same fight, and many of the same fighters, from the pre-Clovis debate and related battles over Meadocroft, Monte Verde, and Cactus Hill (one of the papers was on Cactus Hill). I don't do paleo, so I can't comment further.