JOSEPH AX PRESIDENT Donald Trump appeared to acknowledge publicly for the first time on Sunday that Democrat Joe Biden won the November 3 U.S. presidential election but asserted that it was "rigged", reiterating his false claims of widespread voting fraud. Biden defeated Trump by winning a series of battleground states that the Republican incumbent had won in 2016. The Democratic former vice president also won the national popular vote by more than 5.5 million votes, or 3.6 percentage points. Trump seemed to acknowledge Biden's victory in a Twitter post in which he listed unsubstantiated allegations of fraud. "He won because…