Originally Posted by
Archigeek
You are correct that the federal government doesn't have to comply with state regulations, but the wind design speeds come from the International Code Council, (that's the name, but it's really US code), which in turn gets them from a standards testing organization, I forget which one. Bottom line is that no engineer of record worth their salt would ignore those standards,but it's likely that someone did, which lead to shoddy design.
In answer to the bracing side question, you can brace from either side, in fact you don't design for prevailing wind direction so much as the load of the wind in general.
At the end of the day it's a screw up, and screw ups happen. The real sign of a good contractor is how quickly and correctly they fix mistakes and keep the project moving forward.