According to U.S. Customs and Border Protection:

CBP is seeking your input on proposed remediation actions associated with the construction of border barrier in Cochise, Pima, and Santa Cruz counties, Arizona, within the U.S. Border Patrol (USBP) Tucson Sector.

Concerned citizens can visit the remediation plan web page and submit comments to CBP according to their instructions before the February 3, 2022 deadline.