US elections: Harris has bigger cognitive problems than Biden, claims Trump

Republican presidential candidate Donald Trump has claimed that his Democratic rival Kamala Harris has a "bigger cognitive problem" than President Joe Biden, who pulled out of the White House bid after a disastrous debate performance.

Fears over 81-year-old Biden's age and mental state grew after the June 27 debate between him and Trump.

Addressing an election rally in the battleground state of Georgia, Republican Party presidential candidate Trump said the world is "laughing" at 59-year-old Vice President Harris.

You know what they're really laughing at? Kamala, because they can't believe that she's going to be president. They can't believe it," Trump, 78, said.

"You talk about cognitive problems? She's got bigger cognitive problems than he (Biden) has, in my opinion, Trump alleged.

This is how we're going to end the era of inflation and mayhem, misery. Under Kamala and Crooked Joe, we had such misery. Think about what we've been through with inflation, with the wars all over the