I enjoyed this work, apparently a thesis by a Berkeley undergrad, that involved a ton of data gathering.  The piece looks into how the proposed Volcker rule changed when made final, and then looks at lobbying expenses, SEC meeting data, and the requests made in bespoke comment letter for changes - and whether those changes were adopted.  The bottom line is that lobbying worked in specific ways in relation to this rule.  So much hand collection that you worry about errors, and the empirics are straightforward correlations, though I do not view that as a criticism of this author. You might like it too!

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