You can use a rectangle shape to put a border around any image, text box or other object in a PowerPoint slide. Click the "Insert" tab on the ribbon and click the "Shapes" button to display shapes ...

There is currently 654 miles (1,052 kilometers) of single-layer fence on the 1,954-mile (3,143-kilometer) border, plus 51 miles (82 kilometers) of double- and triple-layer fence.

There is currently 654 miles of single-layer fence on the 1,954-mile border, plus 51 miles of double- and triple-layer fence.