I contacted one school - UW with PhD in marketing program. They said that they rarely accept international students with no prior education in US before PhD program. They prefer students with MBA or master of stats.
Do you know which schools are more friendly with students who just have undergraduate outside of the US.
Top 5% GPA, GMAT 680 and iTOEFL 110.
These are really two questions --
1) do you need a graduate degree to be accepted for a PhD program in the US
2) do you need prior US education before the PhD
1) B-schools strongly adhere to the idea that education is a good signaling device, and having a graduate degree signals that (obviously) you can do graduate level work. If you don't have that, you need an otherwise very good profile; I don't know how your GMAT and other profile pieces compare to the rest of UW applicants or other Big 10-level schools, but I would suspect that not having a graduate degree will have a greater weight on your chances of admission than not having a degree from the US.
2) I'd be very surprised if any good school restricted themselves to PhD applicants with prior US degrees. 4 years ago, I did not have that (but I had a Canadian graduate degree) and got 3 offers at very good schools for an Accounting PhD, and I'd estimate that out of all current PhD students here, a good 2/3 of them are pursuing their 1st US degree, including many in Marketing. I can't see why this'd be much different elsewhere in terms of policy.