Such as the policy of deliberately stuffing the native population by increasing the size of the work force and thereby decreasing the opportunities available to, and earning capacities of, native citizens.
And you can always rely on 'The Guardian' to write guff like,
"Poles have become indispensable to whole sections of the British economy."
Which sections, exactly? Those where employers are not prepared to pay market wages?
Or which need migration's human subsidy in order to continue trading?