Her full reasoning is at the link below:
https://www.commondreams.org/news/2022/03/10/omar-explains-why-she-voted-against-congressional-ban-russian-oil-imports?utm_term=Autofeed&utm_campaign=echobox&utm_medium=Social&utm_source=Twitter#Echobox=1646944347
“I have serious concerns that the Suspending Energy Imports From Russia Act will become yet another clear example where a policy stays on the books well past its utility because the political will to lift it has never materialized,” Omar said. “One thing that is very clear is that our dependence on oil means a dependence on tyrants, and this has always been true. There is no meaningful principle at play in a decision to ban Russian oil but seek it from Saudi Arabia instead.”
“Common Dreams” is as radically far lefty as they get.
Sneaky Islamist Ilhan Omar is only against Saudi Arabia - really out of being pro-Iran Mullahcracy.