(Olympia, WA)  --  An income tax for Washington state is being discussed as a way to generate revenue for education, but a number of Republican lawmakers want to end that discussion.  Several Republicans are supporting a proposed constitutional amendment that would prohibit a state income tax in Washington.  A House resolution was approved for a committee hearing this week, and is a companion to a Republican-backed Senate resolution.  A committee hearing will be held on the Senate resolution next week.