Originally Posted by
quintic
Question 2: If her flight is YAP-GUAM onwards to China (home) via (HKG or NRT or ICN) does she need a transit visa as well? If she arrives at Guam holding an onward ticket to HKG, will CBP deny her entry and send her back to YAP? or will they force her to make onward flight to US?
The normal case (ignoring the F visa) is that the TIMATIC check results in denial of boarding at the original airport (YAP in this case). I feel like in this particular circumstance CBP is likely to just get her out on the next ticketed flight (most convenient resolution for them), but that is absolutely not something you want to gamble with. The USA is just not set up to handle I/I transits very well - case in point that they can't even manage an airside international transit area in GUM.