Border Enforcement Accountability, Oversight, and Community Engagement Act of 2015

Border Enforcement Accountability, Oversight, and Community Engagement Act of 2015 Establishes: (1) the Department of Homeland Security Border Oversight Commission, and (2) a northern border subcommittee and a southern border subcommittee within the Commission. Requires the Commission and the subcommittees to: (1) recommend border enforcement policy improvements; (2) evaluate policies of federal agencies operating along the borders to protect due process and human rights of border residents and visitors, protect land owner private property rights, and reduce the number of migrant deaths; (3) recommend safety improvements for U.S. Customs and Border Protection (CBP) personnel; and (4) evaluate training and the extent to which CBP supervisory and management personnel practices encourage workforce development and promote field safety. Amends the Homeland Security Act of 2002 to rename the position of Citizenship and Immigration Services Ombudsman in the Department of Homeland Security (DHS) as the Ombudsman for Border and Immigration Related Concerns. Revises related function and administrative provisions, including requiring the Ombudsman to establish a Border Community Liaison Office in each Border Patrol sector on the northern and southern borders. Sets forth specified training and continuing education requirements for CBP personnel. Directs DHS to submit to Congress an assessment of current guidelines for managing ports of entry under DHS control. Directs: (1) CBP to report to Congress regarding deaths occurring along the U.S.-Mexico border, and (2) the Government Accountability Office (GAO) to review such report. Directs: (1) GAO to examine the extent to which CBP has clarified use of force policies, and (2) DHS to require CBP to implement any recommendations contained in such examination.