So, my fiance and I just got into JFK today after spending 16 days in Malaysia. I asked many questions, and hopefully I can clear some things up for everyone.
1. The rule for America is *more than* 14 days out of China, meaning you need to be out of China for *at least* 15 days.
2. K1 Visa absolutely is not exempt from the 2 weeks ban. A fiance is not an immediate relative, and they will not let them in the border.
3. Many airlines are uncertain on the rules set by America, or just don't want to deal with the hassle and will turn your fiance away, not allowing them on the flight, and they will blame the U.S. Thus, the more airlines your ticket is through, the higher the risk is. For minimal risk, book your ticket through a single airline going all the way from your origin to destination so you only have to check in once.
4. If you are travelling in a group, or especially with your American fiance there is a MUCH higher chance of being allowed in. JFK's CBP Warden sepcifically told me that if they have been out for at least 15 days, and are travelling with an American citizen, they will absolutely not be turned away at JFK unless there is some special circumstance.
I left China, stayed in Malaysia for 16 days, then booked a flight from Kuala Lumpur to JFK, transferring through Dubai via Emirates. Emirates was hesitant to let my fiance check in at Kuala Lumpur, but allowed it after consulting the computer.
Once I got to Dubai, we had to go through a special security screening before being allowed to board the flight bound for America. They were much more serious with their questioning of my fiance there, and I am fairly certain that if I wasn't there to firmly and confidently talk with them on her behalf, Emirates would have denied her entry, leaving her stranded in Dubai. I have many other contacts on WeChat reporting similar experiences at virtually every airport around the world before the last flight to America.
Once at JFK, we were separated into different lines since I am a citizen. However, I made a point of saying that I am with my fiance, and explaining our situation to the immigration agent. She took me aside to a special room to have the warden ask me question as I had been in China so recently myself. There my fiance was already waiting, as she had been taken there for the same reason. The warden then asked me and my fiance a series of questions about our journey. He was very professional, but I feel he would have been less understanding and willing to help had I not been there again. Once more, I have WeChat contacts who have reported similar situations by themselves, and being denied entry.
Hopefully you all can learn from my experience, and be a little more prepared for what to expect.