I don't think I've asked about this in this thread yet, but I know there are a number of celebrities who trademarked their names and/or images. But if a trademarked person were to become president, would they still be trademarked, or would they automatically become public domain? Seems like the names and images of all presidents are public domain, and it would be bad if sometime in the future there was a president who had to be skipped in, say, a poster of all the presidents, or if Disney couldn't add such a president to the Hall of Presidents attraction (or is that still at the theme parks?).
And what are the basic trademark rules regarding a trademarked person (just the same as trademark of a fictional character?)? If a trademarked person worked on something, would they (and their future heirs) get more than just residuals? It seems like it's usually not an issue when it comes to reference books on movies or television (I've read that Chuck Jones' name is trademarked, and he is referred to by name in many non-fiction books on Looney Tunes).
And according to TV Tropes, either George Lucas or Lucasfilm (and I guess Disney now) holds the trademark on the appearance of the Star Wars actors (TV Tropes mentions that Carrie Fisher has joked that she owes money when she looks in a mirror). So whenever the actors appear in non-Lucasfilm works, do the companies making them have to pay George Lucas (if not the actors giving him a portion of their residuals)?
Is there a website out there that lists all real people who are trademarked in some way (I had done a search but couldn't find one)? There are some people who I know are trademarked by name and/or image (Jim Henson, Elvis Presley, The Marx Brothers, Chuck Jones, I read that Sarah Palin tried to trademark her name but I don't know how that turned out), and there are some who I suspect are trademarked (Marylin Monroe, Betty Paige, Lucille Ball, Walt Disney, Dr. Seuss, most of the Looney Tunes directors besides Chuck Jones) but don't really know for sure.