There's also a strong political reason for the US to not approve the vaccine as fast. Fauci had to walk back[0] comments about the UK "rushing" the approval, s

There's also a strong political reason for the US to not approve the vaccine as fast. Fauci had to walk back[0] comments about the UK "rushing" the approval, stating "The point that I was really trying to make [...] in the United States there is such a considerable amount of tension of pushing back on the credibility of the safety and of the efficacy that if we in the United States had done it as quickly as the UK did [...] that if we had for example had approved it yesterday or tomorrow there would have been push-back on an already scrutinising society that has really in some respects in the United States too much scepticism about the process." [0] https://www.bbc.co.uk/news/world-us-canada-55177948 https://www.bbc.co.uk/news/world-us-canada-55177948