Reuters: Donald Trump was succinct last week when asked how the United States should respond to climate change.
"It's not a big problem at all," the leader in opinion polls for the Republican presidential nomination told a radio talk show host. "If you look at China, they're doing nothing about it."
This week, Chinese President Xi Jinping came to Washington and agreed to take new measures. Standing alongside President Barack Obama at the White House, the Chinese leader committed his country to a series...