As of April 22nd, Nintendo of America has registered several new domain names. Among them is fireemblemawakening.com, possibly pointing to a US release of the upcoming 3DS entry in the popular SRPG series.
While this is in no way a confirmation as we have learned many times before with domains related to games such as Disaster: Day of Crisis, it does mean that NOA is at the very least considering it. As the game is already confirmed for Europe, chances of it heading to NA are relatively good.
The status of Fire Emblem: Awakening's localization will most likely be made clear at E3 this June.