Do you have a link to anything that shows the data analysis on our voting patterns having less international backing in recent times? I see the data and can plot out a trend myself, but if someone has already done better analysis I'm curious to read more about what you're talking about.

edit: I did a simple chart over all the UN votes sorted by date and the amount of votes that match USA votes seems to increase over time, but the real issue is that the vote data only went through 2021. At a quick glance the only data I can find does not match what you're suggesting.