In a statement, former US President Donald Trump said that everyone including the "enemy" are saying that he was right about Covid-19 or what he calls the "China virus" lab leak theory.
"The correspondence between Dr Fauci and China speaks too loudly for anyone to ignore. China should pay Ten Trillion Dollars to America, and the World, for the death and destruction they have caused!" he said in the statement.
President Joe Biden earlier in the week ordered aides to find answers to the origin of the virus that causes Covid-19, saying on Wednesday that US intelligence agencies are pursuing rival theories potentially including the possibility of a laboratory accident in China.
Intelligence agencies are considering two likely scenarios but still lack strong confidence in their conclusions and are hotly debating which is more probable, Biden said.
(With inputs from Reuters)