They're meant to expose wrongdoing and corruption or find the cracks in the systems in order to remedy them. But what, exactly, is Congress allowed to investigate, what is the end goal and what does it mean to be held in contempt?

Linda Fowler, Professor of Government and Policy at Dartmouth College, is our guide to congressional investigations -- how they happen, why they happen and what happens afterward.

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To see Civics 101 in book form, check out A User's Guide to Democracy: How America Works by Hannah McCarthy and Nick Capodice, featuring illustrations by Tom Toro.
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1225. La vida después del 9/11