I just checked his results database, and the best US player of his generation Roddick only played at LA 4 times in his career (in 2001, 2002, 2006 and 200
, and the second best player Blake played there pretty intermittently as well.
All of these ATP 500 or 250 events in the US will continue to struggle as long as tennis remains such a heavily European dominated sport, and the best US players are struggling to reach the top 10 and gain any recognition whatsoever amongst more casual tennis followers.
Indianapolis merely relocated to Atlanta in 2010 and wasn't scrapped altogether at least. Still it is pretty sad that there is no event held there any more, considering that Indy was voted by the players as their favourite International Series Gold/ATP 500 tour event, 9 times in 12 years from 1990-2001.