Although Xiaomi has been around for some time now, their devices were never offered in the US mainly because they will probably have to deal with a lot of patent issue but the people over in the US have been hoping that Xiaomi would make it over one day.
While most people think that having the Xiaomi Mi Note 2 in the US is rather impossible, others think that it might be that impossible. We know that some other Chinese smartphone manufacturers have already made their way to the US. OnePlus have been getting some degree of success here in the IS and Huawei seems to be doing very well too.
With the kind of price the Xiaomi devices are selling for, the Xiaomi devices would make a great competitor for some of the premium devices like the Samsung Galaxy S7, HTC 10 and so much more.