Barack Obama posed for the first ever 3D presidential portrait. He did it for the Smithsonian, and I can only imagine this will become standard practice for future presidents. And why are they doing this? Gunter Waibel, the director of the Smithsonian digitization explains:

This is the first bust that's created of a head of state from objective 3D scan data," said Adam Metallo, 3D digitization program officer at the Smithsonian. "So this isn't an artistic likeness of the president, this is actually millions upon millions of measurements...that we can now 3D print and make something that's never been done before.