Some of what the president may pursue, particularly when it comes to climate change, may be through executive branch actions that don't need congressional approval.
The Pentagon this week acted on its own to lift a ban that kept female service members out of combat positions. And the Education Department unilaterally ordered schools to include students with disabilities in sports programs or provide equal alternative options.
White House officials are scouring rule books for other actions the West Wing and government agencies can take on their own.
Associated Press writers Josh Lederman contributed to this report.
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