In 2010, the curator at the National Archives banned all photography in the Rotunda where the Declaration of Independence, the U.S. Constitution, and the Bill of Rights are on display.
According to recent changes and on the road reports from EPLS...
"Is photography allowed?
Non-flash photography is encouraged in all public areas of the National Archives Museum unless otherwise posted."According to on the road reporting, the reason/purpose for photos being allowed again at the National Archives is to promote awarness using social media. The new director throught that allowing visitors to take photos would work the best.