Border Community Input in Border Security Act This bill prohibits the Department of Homeland Security (DHS) from constructing additional physical barriers or related infrastructure or technology between ports of entry along the U.S.-Mexico border until DHS has published a final mitigation plan to minimize the impact of the barriers and infrastructure on the communities in the affected areas. DHS shall (1) first publish a publicly available initial mitigation plan, (2) hold public meetings near the affected areas, and (3) provide an opportunity for written feedback. DHS shall develop and publish a final mitigation plan after taking into consideration the public feedback on the initial plan..If significant additional construction or deployment is determined to be necessary after the publication of a final plan, DHS shall update the plan and provide additional opportunities for public feedback.