Being a government site it is required to be accessible via Section 508 of the Rehabilitation Act. Great hierarchy structure and use of ARIA landmark roles.
The image banner could be structured better, but the grid layout of such a content heavy page works very well and gives the illusion of line throughout.
Similarity is used throughout the navigation and header, as well as with the grid layout and continuation of the text effects in the main content. The texts visual hierarchy could be structured better, however.