I was reading a Utility Guidelines document (Yale, for internal systems, but publically available) and came across an interesting clause: No piping, fittings, or specialties manufactured, fabricated, and/or assembled in China, Taiwan, or India are permitted on any project including those companies registered with ISO 9001. (google this bit if you want to access the full document) Now, I can see where this might come from. Perhaps, the design engineer got burnt in the past etc. My question: As a design engineer, am I allowed to, in general, put such clauses (restricting country of origin) in my specs. or RFP's etc.? Asides of political correctness, will this be ok legally? What about those engineers working in government settings? Does this pass? Just curious about opinions.