Assuming I'm a politician, couldn't I use those imported people to stir up trouble so I can get enough political support to change legislation so it fits me like in the article here? More surveillance and control isn't a bad thing if you're at the top. Furthermore these imported people all have very simple "triggers" to make them do violent stuff so its very easy to use them towards your own ends.
the wages for the businesses the politicians and their donors own are driven way down, the value of the properties the politicians and their donors own are driven way up, and they're willing to sacrifice as many of your freedoms and your lives as they must to keep it up.
People might use that integration to topple the powers that be, too dangerous.
It's indeed very dangerous to have the people choose their government if it's not the one we've been used to.