The "environmental impact" is likely bullshit too. Radical Leftist environmental types trot that out as a reason to stop everything. As an example here in Arizona of all of this is the Resolution copper mine outside of Superior AZ. The environmental types are saying the same thing even after multiple studies by multiple groups, the government included, all show it won't have some horrible environmental impact they demand another study. The mine and its impacts have been studied for over two decades now.
Then the usual suspects from the White Mountain Apachie tribe showed up and claimed "sacred land" where they (the tribe supposedly) pick sacred acorns from oak trees of the sort that grow all over the goddamned state. The tribal leaders are staying out of it because they get a cut of the mine's profits which is almost always what some tribe really wants.
Mosquitos and heat? Are you fucking kidding me? What kind of lame assed, whiny excuse is that? The majority--vast majority--of illegals come from countries where mosquitos and heat are a daily occurrence. They almost certainly didn't get air conditioning there, so why should it be a bother if they don't get it for a few weeks in Florida before being deported somewhere where there's mosquitos and heat?