What does a US ban on Russian oil accomplish?

Payne Institute Director Morgan Bazilian contributes to this article about how with Russia intensifying its war on Ukraine, killing civilians and triggering a mass refugee crisis, President Joe Biden on Tuesday announced a U.S. ban on imported Russian oil. Critics of Russia have said that sanctioning its energy exports would be the best — perhaps only — way to force Moscow to pull back.  March 8, 2022.