Are we overreacting to US withdrawal from the Paris Agreement on climate?

The decision to pull the U.S. out of a global agreement is a dramatic one

The Trump administration has announced the U.S. will withdraw from the Paris Agreement on climate change. Should we expect any substantive effect on global climate efforts or changes to other U.S. climate policies?

Some suggest there will be additional emissions of up to three billion metric tons of carbon dioxide in the air a year. Others point to higher U.S. emissions due to potentially diluted auto fuel efficiency standards and changes to rules to restrict methane leaks from the oil and gas industry.

To be sure, the decision to pull the U.S. out of a global