sentences:  Each location prominently displays a portrait of Elsa Kopp.In September 2004, Vice President Dick Cheney made an unannounced visit to a Kopp's Frozen Custard location while campaigning for his and George W. Bush's reelection.In June 2010, Vice President Joe Biden visited a Kopp's Frozen Custard location while campaigning for Democratic Senator Russ Feingold.