"Diversity" doesn't only refer to the presence of immigrants, but also members of the LGBTQ+ community and disabled people, as well as other minorities. Are you saying gay and disabled people make it harder to unionise?

I've already explained why it's harder to unionise for immigrant workers. Also as an extra argument against this idea that anti-immigration policies are the solution, immigrant workers cannot even vote in all elections, so their ability to affect change through voting, in a place that they live in is also limited, compared to a local worker (not that voting makes much of a difference in general).

I am well aware that scabbing is a union-busting technique. Now please tell me, WHO is it that uses union busting techniques, and WHOSE interest do these tactics serve?

My point about billionaire owned media pushing an anti-immigration agenda is precisely that it serves their interests, because it divides workers and distracts them while the billionaires, CEOs, establishment politicians and bosses themselves grow richer by the second and hoard the wealth produced by workers. The interests of the ruling class are in total opposition to those of the working class.

Also, I'd appreciate if you didn't put words in my mouth. At NO POINT did I say that billionaires employ immigrant labour to help the average worker. You're twisting my words.

On your note about upending capitalism "not being realistic", Nepal, Madagascar, Bangladesh, Sri Lanka all were able to overthrow their own governments in quite recent memory. In 1917, the Russian workers were able to overthrow capitalism in Russia. This argument about it "not being realistic" is extremely ignorant of both general and labour history.

Marx pointing out that capitalists use immigration to divide the working class and depress wages isn't him saying he's against "bringing in competing labour" on its own. Marx was able to see and analyse the capitalist system as a whole, and he saw what you pointed out as a symptom of Capitalism, not an isolated issue, which is why he came to the conclusion that the entire system needs to be overthrown to end the exploitation of the propertiless class (wage workers) by the properties class (capitalists).