"DoD [Department of Defense] will turn over unfinished projects to DHS in various stages of completion to undertake activities necessary to address urgent life, safety, environmental, or other remediation required to protect border communities," DHS said in a press release.
"Activities include but are not limited to: Closing small gaps that remain open from prior construction activities and remediating incomplete gates."
Much of the work will be completed in the US border states Texas and Arizona, the release said.
DHS said it is completing gaps left open on Trump's border wall due to safety concerns. Work will include adding missing gates, addressing incomplete foundations and connecting power to gates that are already hung but are currently inoperable, the release added.
One of Biden's first actions when he assumed office in January was to halt the border wall construction funded by Defense Department funding. However, the move left several portions of border wall open after construction was halted, which is often exploited by migrants crossing illegally into the United States.