Originally Posted by
commit aviation
Unless the rules have changed, that's not entirely accurate. If a passenger is required to have a visa to enter a country and doesn't, the carrier who brought them will be required to remove them, will likely be fined for the contravention and any costs incurred whilst the individual is held. May vary on a country by country basis but always used to be the case.
That is if the airline has carried them without appropriately checking their eligibility to enter. That’s not the case if the passenger has presented fraudulent documents. The onus is on the passenger to present themselves with the correct documents for travel.