Like all leaders at the summit, he turned up with an agenda of his own.
Trump announced his intent to withdraw in 2017, and it took affect last year.
He seems determined to fix this.
When Biden made rejoining the Paris Agreement his priority, he set the tone for his entire administration.
Biden came to Glasgow with the stated aim of cutting greenhouse gas emissions by a gigaton by 2030.
The US is one of the world’s biggest emitters of methane.
It sounds like the decisive decade will also be a busy one.
The US wants to lead by example…
Even though the US hasn’t been a climate leader in recent years, Biden hopes to change that.
