That's a poorly representative chart of the current situation. That data is from 2017, showing that exports hit 1.1 million barrels per day.

Here is what it looks like now (hit 3.1 million barrles per day in June):

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=PET&s=M...

And this:

Sept 12: "Booming shale production helped the United States briefly overtake Saudi Arabia and Russia to become the world's top oil exporter for the first time earlier this year. US exports of crude topped 3 million barrels per day in June, according to the International Energy Agency, pushing its total oil exports to nearly 9 million barrels per day."

https://www.cnn.com/2019/09/12/investing/us-oil-exports-saud...