From living in Ukraine for 10 years, no one will stop you living in Ukraine, if you are a citizen of different country you might have trouble coming back if you stay for too long though. Ukraine does not officially recognize dual-citizenship, but neither will Ukraine take away your citizenship from another county if you ever chose to become a citizen of Ukraine.
A US citizen can stay in Malaysia for up to 90 days without a visa.
A US citizen can stay in Japan for up to 90 days without a visa for tourism or business purposes. If they wish to stay longer, they would need to apply for a visa or an extension of stay.
Yes, if you will stay up to 90 days in Ukraine, you do not need Ukrainian visa. The same not only for USA citizens, but also for citizens of EU countries, Canada, Norway, Switzerland and Japan.
A Japanese citizen can stay in the Philippines for up to 30 days without a visa. If they wish to stay longer, they will need to apply for a visa extension through the Philippine Bureau of Immigration.
a USA citizen can stay in Japan for up to 90 days without a visa
my advice is he should because if he is married to a legal citizen he should get the same rights.
No if you are from the United States, Canada or European Union.
As long as your visa is valid
Nothing happens except that you will be married happily to the US citizen. You need to get married only within 90 days of entering the US and 60 days is perfectly fine.
Yes, a U.S. citizen can stay in Mexico for up to 180 days as a tourist without a visa, as long as they present a valid passport upon entry. However, it's important to note that the immigration officer may stamp the passport for a shorter duration, typically up to 90 days. To stay for three months, the traveler should ensure they adhere to the entry requirements and keep their passport valid throughout their stay.
You do not need a visa for a stay of max. 90 days.