Step dancing , a tradition popularized by 1994 's `` Riverdance '' show , involves rapid foot work while keeping the upper body stiff . Irish Americans , who make up 12 percent of U.S. population , prepare to celebrate . A political - minded Irish hopes for a visit from President Obama . Emerald Isle ancestors are remembered coast to coast , even in the Midwest . Traditional Irish dancing in Chicago before the river turns green .
Irish Americans , who make up 12 percent of U.S. population , prepare to celebrate . A political - minded Irish hopes for a visit from President Obama . Emerald Isle ancestors are remembered coast to coast , even in the Midwest . Traditional Irish dancing in Chicago before the river turns green .