Former Iowa Congressman Leonard Boswell has died after a battle with cancer. Boswell was found unresponsive in his Decatur County home early Friday morning. He was taken to a Des Moines hospital, where he died. The longtime Democrat served 16 years in the US House of Representatives until his defeat in 2012 to former Republican Congressman Tom Latham. The race between two incumbents came after redistricting cost Iowa a house seat. Before being elected to Congress, Boswell served 12 years in the Iowa Senate beginning in the mid-1980s. A Vietnam War veteran and helicopter pilot, he had 20 years of decorated service in the US Army. Boswell was 84.