The U.S. is dependent on oil and the oil market is global. Even if the U.S. is a net exporter of oil, Americans still pay increased prices for pretty much everything as a result and the economy suffers. The only way around this would be a scheme in which domestic oil producers are forced to sell to American refiners at pre-war prices, similar to the "National Energy Program" that was tried in Canada during the '80's. (Spoiler: It didn't turn out well.)

Yes, the U.S. is less likely to see its pumps run dry and U.S. oil companies are going to be very happy with the increased prices. However, unless it goes the NEP route, U.S. companies are going to export more oil creating shorter supply at home. Americans will pay the same high prices everyone else will be paying. As we're seeing now, the U.S. might actually see even higher price increases than countries like China.

"The entire region has exactly two strategic concerns of note: the Suez Canal (and connected Red Sea shipping system) and the oil production in the Persian Gulf and the shipping system used to export it. So long as these two arteries remained open the region does not matter very much to the United States."

First, observe the top 10 oil reserve countries:

1. Venezuela: ~303–304 billion barrels (mostly heavy crude) 2. Saudi Arabia: ~267 billion barrels 3. Iran: ~208–209 billion barrels 4. Canada: ~163–170 billion barrels (mostly oil sands) 5. Iraq: ~145–147 billion barrels 6. United Arab Emirates (UAE): ~111–113 billion barrels 7. Kuwait: ~101 billion barrels 8. Russia: ~80–110 billion barrels (estimates vary) 9. United States: ~40–70 billion barrels (reserves fluctuate with prices/technology) 10. Libya: ~48 billion barrels

China is the world's largest oil importer. Stats are hard, things get mislabeled due to sanctions, but somewhere between 15%-20% of China's oil is-or-was from Iran+Venezuela.

In my view, this partially explains the move in Iran, considering a 3-10 year strategic timeline.