US presidential candidates Kamala Harris and Donald Trump are set to face off in a televised debate on September 10, broadcaster ABC said on Thursday. Initially, Republican candidate Trump and Democratic US President Joe Biden had agreed on the date for a debate before the incumbent withdrew from the race for the White House and Harris replaced him. Subsequently, Trump proposed an alternative date with a different broadcaster. During a press conference at his Mar-a-Lago estate in Florida, Trump said he wanted to face Harris in three debates ahead of the November US presidential election, addin…