Trump is pulling America out of the Paris Agreement, leaving the U.S. as the only major emitter not part of the treaty. It's a loss for U.S. businesses and the planet.

When Trump announced the U.S. withdrawal from the climate agreement in 2017, the move reverberated around the globe. Nearly 200 nations had committed to reducing greenhouse gas emissions under the pact when it was created in 2015, and they had set ambitious targets to keep global temperature rise well below 2°C, and ideally below 1.5°C.

Many global travel brands have aligned their climate targets with the Paris Agreement. The U.S. exit from the pact may not change that.