... I suppose politics isn't allowed here in MSFN (yes, according to rule 2.b:
), so I'll only skim the surface of things, limiting myself to the "technology/physics" of the issue:
1. The USA are a vastly industrialized country, its huge industry sector is responsible for a considerable percentage of global warming/climate change emissions.
2. The current US president, to my knowledge, has withdrawn the US from any global CO2-emissions control treaties, while "poor" Europe still has to honour them.
3. Global warming inducing emissions in one continent contribute to the whole planet getting warmer, as the "butterfly effect" applies here.
4. Using an air-conditioning device consumes major amounts of electricity, to produce this, more emissions are disseminated in power plants, especially if they are of the thermo-electric type (combustion of fossil fuels is used to generate steam, to drive generators).
5. Using an air conditioning device lowers the temperature in the inside, but excess heat is transferred to the outside, resulting in a change to the micro-climate of the area/town/city you live in (surrounding air gets even hotter).
FWIW, I am poor (literally, i.e. I have only a reduced/unstable income), a European, but I do have AC in my apartment; for the record, highs up to 38°C are forecast for today, July 28th, where I reside, plus another spell of an African heatwave is about to strike, starting next Wednesday...
This was not meant as an inflammatory post , I know what @glnz posted had a joking flavour into it ; still, I posted what I did as food for thought...