The wide-ranging orders and accompanying memorandums will seek to undo the centerpiece of former President Obama's environmental legacy and national efforts to address climate change.
It could also jeopardize America's current role in international efforts to confront climate change.
A senior White House official says the goal is to make the U.S. energy-independent and to get the Environmental Protection Agency back to its core mission of maintaining clean air and water.
In a symbolic gesture, the president is expected to sign the documents at EPA headquarters.
Read more: - Trump Takes Aim At A Centerpiece Of Obama's Environmental Legacy : The Two-Way : NPR