Originally Posted by
FlyingUnderTheRadar
Actually, it has nothing to do with TSA rules anymore. It is a local airport prohibition.
"Bottles must be purchased in duty-free shops overseas, and they must be placed in "secure, tamper-evident bags" (also known as STEBs) that are subject to screening by the TSA."
http://www.wheretraveler.com/tsas-ne...y-free-alcohol
Don't think so. HKG has the tamper proof bags and sells duty-free liquor post-security screening. They just won't sell it on flights to the U.S. No problem on flights elsewhere.
Furthermore, the flights to the U.S., including on CX, have a secondary inspection prior to boarding and all liquids >100ml are removed. That doesn't happen on non-U.S. bound flights.