President-elect Joe Biden is expected to sign 15 executive actions upon taking office Wednesday, immediately reversing key Trump administration policies.

Why it matters: The 15 actions — aimed at issues like climate change and immigration — mark more drastic immediate steps compared with the two day-one actions from Biden's four predecessors combined, according to incoming White House press secretary Jen Psaki.

What they're saying: The actions are the first of many, Psaki said in a news release, as Biden works "to address the four crises that he's laid out" — COVID-19, the economic crisis, racial injustice and climate change.

• "In the coming days and weeks we will be announcing additional executive actions that confront these challenges and deliver on the President-elect's promises to the American people," Psaki said, "including revoking the ban on military service by transgender Americans, and reversing the Mexico City policy."

Highlights

• Moving to rejoin Paris Climate Agreement
• Asking the Department of Education to extend student loan relief
• An executive order to rescind Keystone XL pipeline permit
• Rejoining the World Health Organization
• Asking the CDC to "immediately" extend eviction restrictions
• Reversing Trump's travel ban on several Muslim-majority countries
• Temporarily halting oil and gas leasing in Arctic National Wildlife Refuge
• An initiative on advancing racial equity in federal policymaking
• Overturning Trump order excluding undocumented immigrants from census count

Go deeper: See the full list