[axes_of_weezles]

Scan means looking at paperwork, not physical inspection.

They xray about 5%, and actually put hands on less than a percent of the cargo traffic.

[FairOpinion]

Screening means screening, NOT "looking at the paperwork". You don't need "cutting edge technology" to look at paperwork.

[ARealMothersSonForever]

From the document: All cargo that is identified as high risk is inspected, either at the foreign port or upon arrival into the U.S.

Your claim of 5% has not been substantiated by a document. I would conclude that IF we are inspecting 5%, then we are importing 5% high risk cargo. However, there is not any documentation to support my conclusion.