Or, since an actor wants this, make the tax only apply to SAG members. Imagine the howls you'd hear from Martin Sheen. The AUDACITY of making liberal actors put their money where their mouth is.
I'd propose passing a special tax on SAG, AFTRA, Directors, Writers and any other professional association in Hollywood AND the California Bar for everybody who makes more than $36,000 a year (if you remember, that is what Clinton/Gore' first budget considered 'rich' and raised taxes on).