Doing an executive MBA after a PhD
IF you're already a data scientist, then many US firms are crying out for your skills, and willing to pay really good salaries. I'd have a look at coming across to the US in employment as a data scientist with a good company that will probably be willing to invest in management training. The danger with the MBA route (assuming you mean full time at a good business school) is high cost outlay together with a period with no income - but then again only you know your financial position!