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Between 1946 and 2016, economists testified before Congress more than 10,000 times, more than double the other major social sciences combined. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0230104
Fascinatingly, and very much in line with arguments from scholars like Medvetz, Mudge, and others, think tank-associated economists have recently equaled or surpassed academics as sources of testimony, though only in the 2000s:
Even better: all the data are available here! https://osf.io/e3h98/files/
For example, you can quickly learn social scientists have testified before Congress 76 times at hearings whose titles include "climate", "greenhouse", or "global warming." Of those 76 testimonies, how many would you guess are from economists?
The answer, from a very quick pass, appears to be 58 of 76, or about three-quarters. Of the rest, 16 are political scientists and 1 is a psychologist.
According to this data, then, a sociologist has never testified before Congress at a hearing about climate change (through 2016). Does that sound plausible? Cc @TimmonsRoberts
Though, digging in a bit more, it's actually less than 76 because one person is identified as a sociologist in the data and as testifying about climate change, but isn't: Michael Mann.
This looks like a data cleaning issue, as the Michael Mann here is the climate scientist at Penn State, not the historical sociologist at UCLA. The authors tried to account for all of these errors, but with >15,000 cases, there were bound to be some errors.
