After a long and divisive election, the world is trying to come to terms with what a Trump presidency will mean for the American political system and economy.

President-elect Donald J. Trump and his aides have given us many indications of their intentions for their first day in office. In an interview in The New Yorker, Trump aides said that their first goal was to look through President Obama’s hundreds of executive orders for any that could be immediately overturned by a stroke of a pen. The New Yorker points out how this could the start the process of destabilizing President Obama’s legacy:

“He can renounce the Paris Agreement on greenhouse-gas emissions, much as George W. Bush, in 2002, “unsigned” American support for the International Criminal Court. He can re-start exploration of the Keystone pipeline, suspend the Syrian refugee program, and direct the Commerce Department to bring trade cases against China. Or, to loosen restrictions on gun purchases, he can relax background checks.”

Presidents have particular power in the realm of international negotiations and agreements. As such, President Trump could alter or withdraw from trade deals like the Trans-Pacific Partnership (TPP) and the North American Free Trade Agreement (NAFTA), both of which he has criticized in the past.

Trump has also promised that he would work to deport millions of undocumented immigrants in his “first hour” in the Oval Office. By using a presidential memorandum, Trump would be able to direct Homeland Security to work with other federal agencies like Immigrations and Customs Enforcement to prioritize deporting anyone found without documentation, regardless of a criminal record. This would represent a shift from Obama's policy, which has focused more on removing recent immigrants, those apprehended near the border, and those who have been caught committing crimes in the country.