Some people would rather change and some people don't. Some people don't want to be forced to stay in a certain atmosphere.
Anything greater than 350 of parts of carbon dioxide per million is more than the planet can safely deal with. It is what's overwhelming our climate system. Because we've been going up about three parts per million per year. And eventually, we will always be above 410, and then above 420, and above 430. We just keep pouring more carbon into the atmosphere.
That discussion can take place only in an atmosphere in which illegal immigration is a memory of the past, no longer with us, allowing us to weigh the different options available based on the new circumstances at the time.
Some people don't like staying in an atmosphere that was so hostile.
