Is someone considered an international student even if they are a US citizen and their primary residence is in US…
Lets say you were living in an Asian Country 
and all of the above applied to you…
Would you apply as a domestic applicant or an international one? And which one would be more beneficial (?) (maybe less competitive ?)
Also… in ‘insert country name’ on a temporary basis (only for a year)…
If you are a US citizen living overseas, then you are a domestic applicant with non-US residency. There are lots of Americans residing overseas.
It’s more advantageous to apply as a US citizen. You will be eligible for US federal financial aid. Plus, many schools restrict awarding FA to int’l students, and they restrict the number of int"l students they’ll admit.
@PrimeMeridian is correct.
On the Gateway application at least (probably true for all applications), there is no box that you tick to say if you are applying as a domestic applicant or an international one. You are asked for your citizenship, and the school will do with that as it will. Similarly, there is no question that says “Are you URM?” or “Are you legacy?” You just answer the questions as asked.
I recall there is a spot to identify if you are a dual citizen if that’s the case with your situation.
I’m also not certain you could call the aid these school provide as Federal. It’s all private aid and usually available to US citizens for the most part.
Thx @PrimeMeridian , @skieurope , @MAandMEmom, that clears a lot up 
and @MAandMEmom I am only on a visa in xyz country (xyz country forbids dual citizenship) so dual citizenship won’t apply to me
@Peterrrr off topic… plus vegetarian here :-S 