USA has not discussed supplying Ukraine with fighters on high level yet

Українська правда

The response of Joe Biden, the US President, to the question about supplying Ukraine with modern fighter jets may not be the final stance of Washington, since the high-level discussions on arming Kyiv with jets are yet to be held. https://www.pravda.com.ua/eng/news/2023/01/31/7387330/

Source: pravda.com.ua