Currently, yes. Republicans have the trifecta. They could affect grocery prices, but I don’t see Republicans infringing on ‘free enterprise’ like that.
The point I initially made is that the President alone cannot do anything to fix grocery costs without a systemic meltdown, so voters shouldn’t even be casting their presidential ballot on this topic.
Added scare quotes to clarify sarcasm. Yes, the valve only goes one way with Republicans. They won’t regulate private enterprise in a way that adversely impacts domestic businesses.