The Senate recognized this 95-0 1997 (Byrd-Hagel resolution).
The Atlantic reports:
The painful truth is that without cooperation from the world’s largest carbon dioxide emitter, any effort the United States makes to slow global warming likely won’t amount to much. China, where rapid economic growth has been powered with copious amounts of coal, accounted for more than a quarter worldwide emissions in 2011, according to the U.S. Energy Information Administration. The United States was responsible for just under 17 percent.