There is abundant evidence that the planet is in trouble and we have already done irreversible damage on the timescale of human existence, and you can look at anything from sophisticated scientific analysis most people would never understand to something as simple as a carbon chart over the last 200 years for proof. Splitting hairs between massive irreversible damage and the planet dying is essentially pointless and either way it is a huge issue.

Mass immigration is something we’ve dealt with forever and the country has never been irreversibly damaged by it. It is a challenge but we have dealt with it for the entirety of the US’s existence. It sounds like you’ve been duped by the largest MSM channel, Fox News