Why did Donald Trump announce in 2017 that the United States would leave the Paris Agreement?

In 2017, President Donald Trump announced his intention to withdraw the United States from the Paris Agreement based on the argument that the accord’s requirements would negatively impact the American economy.12

Specifically, Trump asserted that adhering to the agreement would:
* Hinder job growth and manufacturing.2
* Cause significant declines in the coal mining, natural gas, steel, and cement industries.2
* Impose unfair standards on the United States while granting developing nations, such as China and India, greater latitude to pursue their climate goals.2

At the time of his announcement, Trump indicated he was open to renegotiating the terms to secure a deal he viewed as more favorable to U.S. interests. While the administration framed the withdrawal as a necessary step for the economy, critics noted that the agreement itself lacked punitive measures for failing to meet emissions targets.2