Not sure why you're stating things about the US when we're talking about the UK and their policies --which apply to Europeans as well as people from other countries.
And yes, the Chinese exclusion act was by definition racist... But no one in any major western country is talking about excluding one race or even nationality of people outright (Trump talks about "pausing" immigration from conflict zones).
People do speak about controlling their legal immigration and deterring illegal/undocumented/etc. immigration (but pretty much all countries do have visa requirements (or inter country-region agreements) --even those who mainly export workers.
And yes, the Chinese exclusion act was by definition racist... But no one in any major western country is talking about excluding one race or even nationality of people outright (Trump talks about "pausing" immigration from conflict zones).
People do speak about controlling their legal immigration and deterring illegal/undocumented/etc. immigration (but pretty much all countries do have visa requirements (or inter country-region agreements) --even those who mainly export workers.