Poland-Lithuania was also host to probably the longest established Islamic minority community in Europe (prior to its annexation by Russia at the end of the 18th century). The Polish Tartars were a well-treated and successful minority.
Poland’s present day ethnic homogeneity - the most ethnically homogenous state in Europe - is an accident of history caused by “cleansing” and border changes largely at the hands of aggressive imperial powers. It was once the most multi-ethnic country in Europe (but then all that Russian Empire, Nazi and Soviet business set in).
A majority of Brits do not support the ban, according to two distinct and recent polls (by YouGov and Sky News respectively):
**Trump’s migrant ban
Half (50%) of Britons believe the migrant ban signed by President Trump is a bad idea, whilst 29% think it is a good one. A further 20% don’t know.
The data shows that should Theresa May adopt a similar ban in the UK, the reaction among British voters would be broadly similar. Almost half (49%) would be appalled or disappointed compared to just over a quarter (27%) who would be delighted or pleased.**
**When told that Mr Trump had banned citizens of seven Muslim-majority countries for 90 days, 34% said they would back a similar policy in the UK, while 49% would oppose such a policy…
Meanwhile, half of Britons support cancelling President Trump’s proposed state visit after a petition to do so garnered more than a million signatures.
Some 49% support such a move, while 38% oppose withdrawing their invitation to Mr Trump.
Older voters are more sympathetic to the US President and his policies than younger people, though most in every group support cancelling Mr Trump’s state visit.
Those aged 55 or over were effectively evenly split between support (40%) and opposition (42%) to a Trump-style travel ban, while the vast majority of 18-34s would oppose such a policy (71% to 11% support).**
Nor does our government, not even Amber Rudd or Boris Johnson.
So please count the UK out. (BTW the variance in those polls also highlights the volatility of polls - I think we’ve learned from Brexit and Trump to be wary of accepting them).
I would also say that some of these polls are being skewed by the over-35s. Older voters are more likely, on average, to be politically engaged enough to participate in surveys and certainly those 50-and-over tend to favour more restrictive policies.