Occidental Petroleum Corporatio (OXY) SC 13G OCCIDENTAL PETROLEUM / BERKSHIRE HATHAWAY ownership change

SCHEDULE 13G

EXHIBIT B

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

AND POWER OF ATTORNEY

The undersigned persons hereby agree that reports on Schedule 13G, and amendments thereto, with respect to the Common Stock of U.S. Bancorp may be filed in a single statement on behalf of each of such persons, and further, each of such persons designates Warren E. Buffett as its agent and Attorney-in-Fact for the purpose of executing any and all Schedule 13G filings required to be made by it with the Securities and Exchange Commission.

Dated: March 4, 2022	/S/ Warren E. Buffett
	Warren E. Buffett
	Berkshire Hathaway Inc.
Dated: March 4, 2022	/S/ Warren E. Buffett
	By: Warren E. Buffett
	Title: Chairman of the Board
	National Indemnity Company
Dated: March 4, 2022	/S/ Marc D. Hamburg
	By: Marc D. Hamberg
	Title: Chairman of the Board
	National Fire & Marine Insurance Company
Dated: March 4, 2022	/S/ Marc D. Hamburg
	By: Marc D. Hamberg
	Title: Chairman of the Board
	Columbia Insurance Company
Dated: March 4, 2022	/S/ Marc D. Hamburg
	By: Marc D. Hamberg
	Title: Chairman of the Board
	GEICO Corporation
Dated: March 4, 2022	/S/ Todd A. Combs
	By: Todd A. Combs
	Title: President
	Government Employees Insurance Company
Dated: March 4, 2022	/S/ Todd A. Combs
	By: Todd A. Combs
	Title: President

	U.S. Investment Corporation
Dated: March 4, 2022	/S/ Stephen J. Rivituso
	By: Stephen J. Rivituso
	Title: Vice President
	Mount Vernon Fire Insurance Company
Dated: March 4, 2022	/S/ Stephen J. Rivituso
	By: Stephen J. Rivituso
	Title: Senior Vice President
	United States Liability Insurance Company
Dated: March 4, 2022	/S/ Stephen J. Rivituso
	By: Stephen J. Rivituso
	Title: Senior Vice President
	GEICO Indemnity Company
Dated: March 4, 2022	/S/ Todd A. Combs
	By: Todd A. Combs
	GEICO Indemnity Company
	GEICO Casualty Company
Dated: March 4, 2022	/S/ Todd A. Combs
	By: Todd A. Combs
	Title: President
	Berkshire Hathaway Specialty Insurance Company
Dated: March 4, 2022	/S/ Dale D. Geistkemper
	By: Dale D. Geistkemper
	Title: Treasurer
	BHG Life Insurance Company
Dated: March 4, 2022	/S/ Dale G. Geistkemper
	By: Dale G. Geistkemper
	Title: Treasurer
	Berkshire Hathaway Life Insurance Company of Nebraska
Dated: March 4, 2022	/S/ Dale D. Geistkemper
	By: Dale D. Geistkemper
	Title: Treasurer

	National Fire & Marine Insurance Company
Dated: March 4, 2022	/S/ Dale D. Geistkemper
	By: Dale D. Geistkemper
	Title: Treasurer