Walker and the WI R's needs to give "The Fleeing 14" two drop dead dates.
What they need in any legislative body is more real force behind compelling attendance: an actual criminal charge to be filed x days after the compulsion against any member who doesn't have a very good excuse (serious illness, impending death in immediate family, capture by Somali pirates, etc.) and a means to simply exclude all those so charged from the defined quorum for any action. (i.e. quorum=original number - those actively resisting compelled attendance)
One of the biggest problems we have at almost all levels is that the most basic laws were written at a time when notifying someone or traveling to a meeting involved a fast horse or ship. Those laws need to be updated to reflect modern times; we can communicate in realtime (give or take a few seconds) between any two places on Earth using equipment that most people have in their pockets. Traveling across the country is easily accomplished in a few days by car or a few hours by plane. There's no need for weeks of delay to give notice, or a month or more for simple action anymore.