But, think tanks exist to explore specific issues within their realm of concern. An "economic think tank" that did a bunch of research into, and then published

But, think tanks exist to explore specific issues within their realm of concern. An "economic think tank" that did a bunch of research into, and then published a study on, immigration, would then be an "economic and immigration think tank." Frankly I'm annoyed that an organization can't declare itself "concerned with" a subject without people leveling claims of bias. Why would they do the study if they didn't care about studying immigration? If there's an issue with the research, find it and argue against it. But "they're biased," nah, I don't bite.