Concerns Over Brexit On Northern Ireland's Border

The people of Northern Ireland will join the rest of Britain in deciding whether to remain or leave the European Union in a referendum on June 23. Some residents of the border city of Derry are concerned that the currently invisible dividing line between the Republic of Ireland and Northern Ireland -- if it becomes the UK’s land border with the EU -- will “harden” once again, harming the free flow of goods and people. (Producer: Kathleen Moore)