WA Supreme Court: Mandamus improper for budget decisions
SEIU Healthcare v. Gregoire SEIU sought pay increases for Home Health providers awarded in a prior arbitration. Gregoire didn't include it in her budget. The latest budge adopted in the 2009-11 biennial budget. Its already been presented to the legislature and passed into law. Thus, its too late to go back and have the governor amend her proposed budget.
Additionally, the act of budgeting is something that you can't issue a writ of mandamus to do, as it is a discretionary function of the governor, and not ministerial.