instruction:
Given a travel related situation, and given a specific question about the situation, summarize the question into a title
question:
We have the report of a Ghanaian-American dual citizen, recently naturalized, presenting their new USA passport at the UK border answering "yes" to the question "have you ever had any problems with immigration anywhere" and getting in some trouble (although no refusal).

We have the CBP answering in essence, the two passports of a dual citizen are completely independent.

Is it the person or is it the nationality? Is the question "have you ever had any problems with immigration anywhere" to be understood on its face value, where "you" is the biological person or is it "you as a citizen of the country your passport you are presenting to us" and they do not give this tirade every time because for the overwhelming majority of passengers the two are the same? Is your new passport a clean slate? Or do you carry the problems resulting from the heightened scrutiny of your other citizenship forever? Is it possible for a border guard to swipe my Canadian passport and be aware of the history of my Hungarian passport? How entwined are my two inner citizens :) ?

Let's restrict the question to those who have at least one citizenship in the Five Eyes countries (Australia, Canada, New Zealand, the United Kingdom and the United States) and one of the Five Eyes borders.

answer:
Can the border guard match up the passports of a dual citizen?


question:
I recently applied for a short-term student visa, mentioning the departure and return dates as 13/05/18 and 10/08/18 (=90 days) respectively. After my visa got approved, the validity dates mentioned were 11/05/18 and 08/08/18 (=90 days) but since I have already booked my return flight on 10/08/18 and if I return back from France on 10//08/18 I'll be violating the visa policy. 

What will be the best thing which I can do in this scenario? 

If I go with this visa and violate the visa policy by exceeding the visa's validity by 2 days what consequences can I possibly face, considering the face that it wasn't actually my fault but a sheer mistake committed by people in embassy?

answer:
Can I stay in France more than the validity range of my Schengen visa given I'm not exceeding my duration limit?


question:
I'm an American traveling to Central America for the first time this summer. I'll be entering Costa Rica and Panama. 

My Spanish is pretty good, but not native, and I wouldn't mind using it, but as a general rule, should I try to address the border officer in their language when I can or should I stick to English?


How it went: I transited Costa Rica without being asked any questions at all, but I entered remote Bocas del Toro using only Spanish (and let me tell you, it was much smoother for me than for my English-only traveling companions) and exited Bocas in English (different officer).

All in all, I followed the advice here, and answered in the language I was addressed in.

answer:

In what language should I address foreign customs and immigration?