Boris Johnson traveled to New York last night to resume a trip to Britain and the United States.
The United States is expected to reopen its border with Britain after meeting with President Joe Biden at the White House on Tuesday.
Mr Johnson will join the United Nations with more than 100 world leaders – the last gathering before the Cop26 summit in Glasgow in November.
He will ask them to step on climate change in the last 50 days before the November gathering.
And it will announce an additional 500 500 million in UK funding to help poor countries move away from coal.
Mr Johnson said he would force leaders to take “concrete action on coal, climate, cars and trees”.
It is unknown at this time what he will do after leaving the post.
“I hope he comes,” said Alok Sharma, president of Cop26.
Mr Johnson is expected to make an “impressive” case to the US president over why he should lift the travel ban.
This could mean that fully vaccinated people in the UK can go directly to the United States after Mr Biden’s failure to ease sanctions.
The two leaders promised to take action during a meeting at the G7 summit in June, but nothing has been done about the situation.
Boris arrives in New York on Sunday for a four-day tour of the United States.
He will also attend the UN General Assembly before his first visit to the White House since entering No. 10 in July 2019.
This comes after the United Kingdom and the United States signed defense agreements with Australia, including defense-powered submarines in the Indo-Pacific.
More than 400,000 Britons typically travel to the United States each year, but only a fraction of these visits occur due to border closures during epidemics.
Under Biden’s strict rules, only US citizens and residents can travel to the United States from most countries in the UK, Europe and Canada.