- Location
- Scottish Highlands
As I recall Boris had traveled to the US on a British passport and when he came to leave they would not let him go because immigration told him that he should have traveled under his US passport. So all things being equal the UK immigration should not have let him back in because he was on a US passport.
I have experience of UK immigration and a bigger load of jerks I never came across. If I was in Boris`s shoes at the time I would have done the same thing.
Presumably Boris had both passports. Nothing to stop him entering and leaving the US on a US passport and then using his British one when he enters the UK.
I seem to recall the US requires dual nationals to use their US passports by default for immigration, which makes sense as it avoids a need for a limited duration permission (usually 90 days), and the perception of overstay if you’ve mixed both and the authorities can’t match up and in and an out.