Yeah if you like.
The defeats of organised labour in Western Europe, particularly Britain, combined with the opening up of the former stalinist 'communist' states, the restoration of US global hegemony enabling imposition of globalisation (privatisation, reduction of tarfiffs etc, thus export of jobs), centralisation of capital, new technologies and yes immigration adding to this a large workforce of low paid workers, with little security, intense rates of exploitation, outside the protection of existing trade unions and labour laws, has enabled the capitalist class to sharply raise the rate of exploitation in the imperialist heartlands, reinforcing a division of core and peripherary workforces, with differing terms of conditions, security and wages.
The point though is what conclusions to draw-
for socialists and anyone pro working class I'd suggest it's for a united working class response, supporting union organisation, drawing in migrants to this, and all precarious workers into unified organisations of the working class operating when possible across international borders and to argue, propagandise and organise for proletarian revolution to wrest back the gains of the capitalists and organsie production under the democratic control and plan of workers' organisations.
Often durruti02 ends up agreeing with this- but why just raise immigration out of context? Yes you're right that capitalists paly off one section of workers against another- as always- and the recent masssive wave of migration is part of that. The answer though is revolutionary organisation of the working class