And he took aim at his predecessor in his address, attacking Trump’s “campaign of resentment, revenge, and retribution that threatens the very idea of America”.

But his starting stutter – a problem from which he has suffered since childhood, but one which appears to have ramped up in recent months – will only serve as more ammunition for his electoral opponent.

He’s confused French presidents, German chancellors, and mixed up Egypt and Mexico – all in 2024.

Trump mocked Biden for his impediment at a Georgia rally earlier this week, even doing an impression of the incumbent, saying: “I’m gonna bring the country tuh-tuh-tuh-together”.

While in January, the former president said: “Did you see him? He was stuttering through the whole thing. He’s saying I’m a threat to democracy – ‘he’s a threat to d-d-democracy’. Couldn’t read the word.”

But Biden has tried to own his stutter – even offering support to a young boy with the same problem, telling him it “took a lot of practice, but I promise you, I promise you, you can do it”.

However, opponents have slammed the Potus for his mumbling – not least when he misspoke at his State of the Union address last week, in which he referred to murdered nursing student Laken Riley as “Lincoln Riley”.

But Democratic Senate Majority Leader Chuck Schumer has dismissed reports – including a Department of Justice report – that Biden’s cognitive ability was not up to task, labelling it “right-wing propaganda”.