Similar situation in New Zealand. The reasons are pretty similar 1. It benefits big business. It's an absolute god send for labour intensive industries to have

Similar situation in New Zealand. The reasons are pretty similar 1. It benefits big business. It's an absolute god send for labour intensive industries to have a constantly growing pool of employees. Especially if they're from places with a worse standard of living, so they're likely to accept much lower working conditions and pay. 2. It benefits real estate speculation. Housing construction simply cannot keep up in demand, and the richest people in our respective countries have a real estate heavy portfolio. Migrants trickle into city centres, which means big construction projects as high density housing is built, as well as the knock on effective of the native born population migrating to new suburbs that get to be built from the ground up. 3. You get to feel warm and fuzzy inside. Diversity, inclusion, different foods etc etc. If native born people pay higher rents, are served by increasingly overcapacity infrastructure, and have their wages suppressed by increased competition - well they're just immoral and can be brow-beaten into accepting policies that are ultimately in place to benefit the rich.