This might be a little outside the main subject of this thread, but it wasn't until this thread that I realized there is a Flicker account with his images. While looking through them I noticed something that seems like it doesn't follow copyright law. That being that it restricts what the copyright says is allowed. Photos that are a work of the government are Public Domain. Since Mr. Souza was appointed by the President, he was an agent of the government. So any images he creates pursuant to his appointment (to photograph the President), are Public Domain, and people are free to use them freely.
So how can Mr. Souza or anyone in the government say that you can not? Look at some of the images on that Flicker account, and you will see this restriction. Here's one that I noticed; https://www.flickr.com …0894941382/in/dateposted/
President Barack Obama talks with Council of Economic Advisers Chairman Jason Furman and National Economic Council Director Jeffrey Zients , right, in the Oval Office, Feb. 5, 2015. (Official White House Photo by Pete Souza)
This official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.