I’d agree to an extent.
Remember, Britain includes England, Scotland, NI and Wales.And only the former has any history of anti-Jewishness.And I would argue that the history is poor to an extent,but much removed from the vicious anti-semitism of the European continent.The anti-semitism in Britain has been historically social,religious and verbal rather than the outright pogroms of mainland Europe.And it is a hatred based in the upper classes rather than the working class(which didnt show any such hatred until the mass immigration of Jews in the later 19th century,and had passed more or less by WW1,the British Fascists famously failed to gain much support in working class London in the 20’s and 30’s and famously in fact the working class rallied against Mosley and his blackshirts,and the BNP enjoys today only a small support,any gain has been more a one off reaction/protest on particular issues)
America’s worst ‘excesses’ I suppose would be: a—the country club snobbery of the US upper classes and b—their limiting of Jewish immigration around ww2.
The fact the US rejected the immigration to America of scores of Jews fleeing oppression in Europe in the late 1930s and early 1940s is a shame we, as a nation, will have to live with.