See the Crisis Act
This bill limits international travel by the Vice President until after certain activities are undertaken regarding the southwest border.
Specifically, the bill prohibits the obligation or expenditure of federal funds for the Vice President's travel expenses to travel outside of the United States until the Vice President (1) personally travels to at least one of several specified counties along the border to review the activities of federal agencies responsible for enforcing and implementing immigration laws, and (2) submits a report relating to the situation at the border.