President-elect Joe Biden has put the climate crisis at the top of his incoming administration's agenda with ambitious goals ranging from rejoining the Paris Agreement to a $2 trillion plan to transition to clean energy. To pass these laws, he will have to deal with a possibly GOP-controlled Senate and multilateral cooperation with America's allies. Christopher Booker reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders