Charles W. Calomiris

Pandemic-program role: The OCC's chief economist from July 2020, the senior economics official at the national-bank regulator whose supervisory perimeter covered the capital and liquidity treatment of PPP lending. No PPP/EIDL rule or testimony bears his name.
Institution · office: Office of the Comptroller of the Currency (Treasury bureau) · Economics Department · Type: senior agency staff (Senior Deputy Comptroller)
Tenure (relief-relevant): Senior Deputy Comptroller for Economics (Chief Economist), effective July 20, 2020, after PPP's April 2020 launch and first round.¹

Identity and role

Level / appointment: Senior Deputy Comptroller for Economics, announced by the OCC on July 13, 2020 and effective July 20, 2020. As chief economist he oversees the OCC's Economics Department, "providing economic, risk, and policy analysis to support bank supervision and policy development," and serves on the OCC's Executive Committee.¹
Reports to: The Comptroller of the Currency. Brian P. Brooks was Acting Comptroller when the appointment was announced and is quoted in the release.¹
Predecessor: Michael Sullivan, who retired in June 2020 after serving since June 2017.¹

Ph.D. in economics, Stanford University; bachelor's in economics, magna cum laude, Yale University; honorary doctorate, University of Basel.¹
Before the OCC: Henry Kaufman Professor of Financial Institutions at Columbia Business School; director of the school's Program for Financial Studies and its Initiative on Finance and Growth in Emerging Markets; professor at Columbia's School of International and Public Affairs.¹

PPP loans landed on bank balance sheets, and the Federal Reserve's PPP Liquidity Facility financed them. The capital and liquidity treatment of that activity ran through the bank regulators: the OCC, the Federal Reserve and the FDIC. Calomiris joined the OCC in July 2020.
The three agencies announced an interim final rule on April 9, 2020, published at 85 FR 20387 and effective April 13, 2020, that let banking organizations neutralize the regulatory-capital effects of participating in the PPP Lending Facility and, "as mandated by section 1102 of the CARES Act," assigned PPP loans "a zero percent risk weight under the agencies' regulatory capital rule."²³ Calomiris started after that rule and is not a named signatory of it.
No PPP or EIDL rule, FAQ, or congressional testimony bearing Calomiris's name was located in the sources we have.

Randal K. Quarles — Fed supervision vice chair over the banks and PPPLF he wrote about.
Michael Faulkender — Treasury economist on the department's PPP employment-effects paper.

OCC, "Charles W. Calomiris Named Senior Deputy Comptroller for Economics," NR 2020-90, July 13, 2020. Archive: occ-nr-2020-90 · https://www.occ.gov/news-issuances/news-releases/2020/nr-occ-2020-90.html ↩
OCC / Federal Reserve / FDIC, "Federal Bank Regulators Issue Interim Final Rule for Paycheck Protection Program Facility," NR IA 2020-51, Apr. 9, 2020. Archive: occ-nr-ia-2020-51 · https://www.occ.gov/news-issuances/news-releases/2020/nr-ia-2020-51.html ↩
"Regulatory Capital Rule: Paycheck Protection Program Lending Facility and Paycheck Protection Program Loans," 85 FR 20387 (Apr. 13, 2020). Archive: FR-2020-04-13_2020-07712 · Regulatory Capital Rule: PPP Lending Facility and PPP Loans (original: govinfo.gov) ↩