These letters do not appear to be a serious attempt to understand the science of global warming. Some might interpret them as a transparent effort to bully and harass climate change experts who have reached conclusions with which you disagree.
Indeed. So its good to see a heavyweight politician coming in on the side of science. Of course, this could just be a democrat-republican fight. The original Barton letters were politics/$ not science, so its probably right for this to turn, nakedly, into a political fight.
Interestingly, though, no-one seems to have anticipated this (even the normally politically astute Prometheus), even though it is (in retrospect) obvious.
BTW: JF: can you get CM back on PF please?