Commentary President Biden’s Earth Day announcement that the United States is to cut its greenhouse gas emissions by 50 percent from 2005 levels (equivalent to a 42 percent cut of 2019’s pre-Covid emission levels) within nine years comes with a double deception—one of cause and the other of effect. It aims to force America to reach net-zero no later than 2050 to limit global warming to 1.5 degrees Celsius. This, the White House claims, is what “the science demands.” In fact, it is the first deception. The 1.5-degree limit has nothing to do with science and everything to do with politics and green ideology. The 1992 U.N. framework convention on climate change set the aim of avoiding “dangerous anthropogenic interference” with the climate system, a problem it left undefined. Four years later, the European Council’s environment ministers filled in the gap. On behalf of the European Union, it declared that “the Council believes that global …