First, it feels like you are wanting to make an issue out of a nothingburger. We aren't talking about 150 or even 1,500 in a city of 60k. We are talking about a shit ton of people that represent a significant portion of existing population that will severely impact the community in many, many ways and will overwhelm all city/county services, particularly a group who need a bunch of services, at least initially.
More importantly, this didn't just happen randomly where some Haitian leader said to all their followers that they should go to a point on a map. These people have been placed there through a federal government program. Someone should be able to click a few times on a computer and tell us exactly the number whether that's 12,467 or 25,932. Of course, we should allow a plus or minus of say 500 for deaths and births, but you are really making a point that doesn't matter. I'm sure glad my smallish community hasn't had a democrat voter import program thrust upon them this way. Of course, we don't need it here as my state is overwhelmingly D.