That was, and is, a bit of a shell game where total consumption of petroleum is less than what the USA produces. Such as natural gas, volumn gains in refining process, etc.
in truth the USA hasn't since the 1960s produced enough crude oil to meet the demand of refineries.
example: 2025 crude oil extracted was about 13.4 million barrels per day. Refinery demand was about 16.5 mbd. A shortfall of crude oil that was just overv3 mbd.
Most of that shortfall is covered by imported oil from Canada.