SEATTLE, WA- A King County Superior Court judge Friday will hear attorneys challenging the constitutionality of Initiative 1053.
The initiative voters passed in November 2010 requires a super majority of the Legislature to raise taxes or fees or close tax loopholes.
The League of Education Voters, the state's largest teacher's union, parents, taxpayers and lawmakers, filed the lawsuit.
Initiative 1053 has prevented lawmakers from adopting several tax and fee increases.
Lawmakers are allowed to change or suspend initiatives after two years, but initiative sponsor Tim Eyman says he plans to introduce a similar initiative every two years to try to keep that from happening.