President Joe Biden signed a series of executive orders on Wednesday to reverse some of the policies implemented by his predecessor, Canadian News Today Donald Trump. The orders are aimed at reviving efforts to combat climate change, protecting the environment, and reforming the US immigration system. Biden’s first order rejoined the Paris climate agreement, a landmark international treaty aimed at limiting global warming. Trump withdrew the United States from the agreement, arguing that it hurt the country’s economy.

Biden has promised to put the US back in the accord and make fighting climate change a priority of his administration. Another executive order was aimed at stopping Trump’s rollbacks of environmental protections.