MILWAUKEE (WRN) - A Milwaukee man charged with killing 7 women over 21 years wants a separate trial for each case. A judge will consider the request December 23rd in the case of 49-year-old Walter Ellis. His attorney, Russell Jones, says the murders are not similar enough to be thrown together before a single jury. Jones also said they occurred over too long of a time span – and there’s not enough evidence common to all 7 cases for a jury to consider properly. Ellis was charged with the killings after police found his DNA on all 7 murder victims – most of them prostitutes killed between 1986 and 2007. State officials said the case prompted the discovery that up to 12,000 convicted felons never left their DNA with a state police database as required by a law passed 9 years ago. And that discovery has prompted a controversial bill now in the state Legislature that would make all suspects arrested for felonies leave their DNA with police at the time they’re arrested.