despair

The US frequently exports light crude oil at a premium while purchasing heavy crude for less. The refineries in the US are largely set up for heavy crude, so it works out and nets a high profit for oil companies.

Colonialism and hate.

Not sure about the person you responded to's specific context but the US sells energy on energy markets. Primarily to neighbors.

Source, currently interviewing for a major ISO and have had to learn this shit

The United States is a major energy exporter and importer, especially for petroleum

Debt

We're damn good at it too.

Millionaires trade it like baseball cards.

The US is the largest exporter of Natural Gas on earth. and Top 3 for oil, like other Lemmings mentioned.