"How is USA" vs "How is the USA"? [duplicate]
The correct grammatical way to say it would be
How is the USA?
because USA stands for United States of America. It would be incorrect to say
How is USA?
because this means
How is United States of America?
It is missing a definite article (the), since there is only one USA.
So, to answer your question, yes, you would need the "the".