In Japanese the US is called アメリカ合衆国.
アメリカ means "America".
国 refers to "country".
What is interesting is that 合衆 means "united people" instead of "united states."
Although it's different from the original meaning of the name,
I consider "united people" more suitable than "united states".
In the past, separated states used to be almost sovereign.
However, when I think of today's US, "the diversity of people" seems to have greater meaning than "states."
Which do you prefer "united people" or "united states"?
Please do not answer this way ' "united states" because it's hard to change a country's name brabrabra...'
Forget about everything but today's US situation and decide your choice.