People Vote with Their Feet Mexican governance is something that the Mexican people don't want and are often desperate to escape.
A majority of Mexican citizens either have fled or want to flee the institutions of Mexico and live under US institutions.
If Mexican governance and independence isn't serving the Mexicans, it should be replaced by institutions that living humans want.
The job of a politician is strictly to win votes. The job of a politician is strictly to win votes. Everything else is secondary. I don't necessarily agree with the second half of the statement, in that I don't think preventing assimilation wins votes. But ultimately politicians are wired to win elections at all costs no matter what the consequences are.
Good for some and bad for others. The wording of the proposition is tricky.
The fact that multiculturalism enables people the freedom to vote with their feet and choose the society that they want to live in is a positive for the migrants. Multiculturalism isn't the direct benefit, it is just the enabler of the direct benefit. If migrants preferred the status quo, they wouldn't choose to migrate.
Obviously, the host culture as a unique entity must accept some level of death to embrace multiculturalism. Generally, this is strongly opposed by the host culture and people, so I would interpret that it is against their interests. Do the ethnic French welcome the death of the ethnic nation state of France? Of course not, but it doesn't seem like they have much choice. Japan has chosen to preserve their ethnic nation state status and politically and geographically, they can do so.
When current US VP Joe Biden advocates for Iraq, "giving each ethno-religious group — Kurd, Sunni Arab and Shiite Arab — room to run its own affairs". He's arguing for completely segregated ethnic nation states, just like the US orchestrated for Bosnia. This is the extreme opposite of integration and a blatant admission that integration often is bad, not wanted, and people are sometimes clearly better served by segregation.