POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint Jessica T. Graziano and Manpreet S. Grewal or either one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ David B. Burritt
David B. Burritt




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Tracy A. Atkinson
Tracy A. Atkinson




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Andrea J. Ayers
Andrea J. Ayers


















































POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Terry L. Dunlap
Terry L. Dunlap






POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ John J. Engel
John J. Engel




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ John V. Faraci
John V. Faraci




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Murry S. Gerber
Murry S. Gerber




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Jeh C. Johnson
Jeh C. Johnson




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Paul A. Mascarenas
Paul A. Mascarenas





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Michael H. McGarry
Michael H. McGarry





POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 2022 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ David S. Sutherland
David S. Sutherland




POWER OF ATTORNEY
The undersigned does hereby make, constitute and appoint David B. Burritt, Jessica T. Graziano and Manpreet S. Grewal or any one of them, my true and lawful attorneys-in-fact to sign and execute for me and on my behalf United States Steel Corporation’s Annual Report on Form 10-K for the year ended December 31, 202 to be filed with the Securities and Exchange Commission, and any and all amendments to such report to be filed with the Securities and Exchange Commission pursuant to the Securities Exchange Act of 1934, as amended, in such form as they or any one or more of them may approve, and to do any and all other acts which said attorneys-in-fact may deem necessary or desirable to enable United States Steel Corporation to comply with said Act and the rules and regulations thereunder.
IN WITNESS WHEREOF, I have hereunto set my hand this 3rd day of February, 2023.

/s/ Patricia A. Tracey
Patricia A. Tracey