Senator Mike Rounds (R-SD) serves on the Senate Committee on Banking, Housing, and Urban Affairs, which has jurisdiction over the Securities & Investment sector. Securities & Investment comprises 20.4% of his identifiable donor base ($0.80M), ranking him #4 among Senate Republicans in donor concentration from that sector.

How we built this: a statistical pattern surfaced from public records — FEC campaign finance, Senate/House Lobbying Disclosure Act filings, and Congress.gov. The donor concentration and the legislative action are concurrent facts; this does not imply contributions caused the action, that the member acted improperly, or that the bill specifically benefits the named sector. Generated September 7, 2026 · internal signal score 73/100.