“In an agreement with China, President Obama has already pledged to reduce America's net greenhouse-gas emissions by more than 25% by 2025. In return, China has agreed to 'peak' its carbon-dioxide emissions in 2030.”

American physician and politician

John Barrasso is an American physician and Republican politician who has represented Wyoming in the United States Senate since 2007. Born in 1952, he moved from medicine into elected office and has been a familiar figure in state and national politics for more than two decades. Before joining the Senate, he served in the Wyoming State Senate from 2003 to 2007. In 2025, he became Senate majority whip, the second-ranking Republican in the chamber. His public profile is tied to his long Senate tenure and his work as a physician-turned-lawmaker.