Call it a tit for tat over subpoenas, one that escalates an ongoing spat over what the biggest U.S. oil company knew and when it knew it. House Science, Space and Technology Committee Chairman Lamar Smith (R-Tex.) said Wednesday his committee was issuing subpoenas to the New York and Massachusetts state attorneys general, who have issued their own subpoenas as part of probes into whether ExxonMobil misled the public and investors about what it knew about the dangers of climate change decades ago. ExxonMobil and its defenders have asserted that the company has merely been exercising its free speech rights with respect to climate change. In a joint news conference, Rep. Randy Weber (R-Tex.) called the attorneys general a “posse” and said “since when did it become a crime to […]