Yup, it would be so very soon and it would become an oil exporter in the next two decades
NA oil shale reserves are around 2.6 trillion barrel which is about two times of the current world oil reserves. The important point is about the exploitation costs, in which many of this huge reserve is economical for oil prices higher than 70$ per barrel
Another positive point is that about half of trade deficit is for importing oil, and getting independent means that half of trade deficit would be vanished