More than 40,000 people are expected to attend the global climate change summit as questions swirl about the United States' future involvement.

RIO DE JANEIRO (Reuters) - Brazil announced details of its new climate change pledge late on Friday night that sets a target to lower the country's greenhouse gas emissions by 2035, which it will present during the United Nations climate summit COP29 in Azerbaijan, according to a government statement.

The United Nations Climate Change Conference begins next week after President-elect Donald Trump’s election win. Trump has promised to withdraw again from the Paris climate accords and called global warming a hoax.

Trump has called climate change a “hoax,” he pulled the United States out of the 2015 Paris climate accord during his first term and has said he would do so again. He has also pledged to expand oil and gas production, eliminate subsidies for clean energy and electric vehicles, and roll back regulations aimed at reducing planet-warming emissions.

Elected officials determine the next steps for climate policy. By electing Donald Trump as president, the U.S. has put him in charge of deciding our future climate. Examining his last presidential term puts what awaits ahead for climate change policy into perspective.