Well, President Biden wasn't inaugurated until January 2021 and wasn't even selected as the Democrat primary winner until June of 2020, so his campaign information is irrelevant to oil production falling.
However if you'd like to blame the sitting President and ignore all other factors contributing to the reduction of oil production (Covid-19, oil industry ramping down well utilization due to demand destruction) then I'll point out Donald Trump was President in all of 2020.