Vice President Kamala Harris to Oversee Response to Rising Migrant Numbers On Wednesday Joe Biden handed leadership of diplomatic efforts along the border to the VP She will be building partnerships with Mexico, El Salvador, Guatemala and Honduras (Northern Triangle Countries) Harris will work to strengthen the democratic institutions to reduce the instability that causes people to risk the journey Harris has also spoke on the need for aid in conjunction with diplomatic efforts Responsibility for handling the immediate problem remains with Homeland Security and Health and Human Services