National Cargo Security Strategy White Paper
Unfortunately, it seems to have taken a fairly straight-forward process and turned it into a bureaucratic maze. Plans now call for quickly instituting a requirement for use of high security mechanical seals on the doors of intermodal containers. The problem is that the containers themselves are insecure and can be entered without breaking the seal. (HK Law)
http://www.homelandsecurity.org/bulletin/ImagesJC/DHS%20Conference%20Dec%202004/National_Cargo_Security_Strategy_White_Paper.pdf