3$/gallon sounds so cheap to me. I'm paying almost 2.5$/liter. I'm pretty sure that will reduce emissions massively more than any change in fuel composition wherever the fuel comes from.
You get a lot of benefits from European-style government, like socialized medicine. But then you also have to pay those taxes.
Taxes are just one factor in the price.
[1]: https://www.cntraveler.com/story/the-worlds-widest-highway-s...
Where allowed by the special interests, and only so far as it supports those special interests.