John Kerry Opposes California Proposition 75

Even though the United States Supreme Court has declared that it is illegal for unions to use dues for political purposes, many still do. California governor Arnold Schwarzenegger is pushing a proposition that would make it state law that unions could not do that without written permmission.
Now, John Kerry has announced his opposition to Prop 75, calling it a "power grab" by Republicans. I guess he prefers the money and power grab by Democrats that currently exists.
After reading this, Californians should ask, "Who is John Kerry?"