LOGAN, Utah — Members of the Oneida Indian Nation are demanding that the National Football League’s Washington Redskins change the team’s name to something less offensive to American Indians. Sportscaster Bob Costas calls the current nickname “an insult, a slur.” Following an announcement by Dan Snyder, who has owned the team since 1999, that he refuses to do any such thing, President Barack Obama joined the fray, saying that if he owned a professional sports team and knew that its name “was offending a sizable group of people, I’d think about changing it.”