USA still imports about 50% of the oil barrels it uses each day, about 10m[1], and there is not enough pipeline capacity to move shale oil to refineries[2]. It's a long way to being self-sufficient.

[1]: https://www.economist.com/leaders/2018/10/18/americas-shale-... [2]: https://www.economist.com/business/2018/10/20/the-shale-boom...