Gov. Arnold Schwarzenegger has boosted his environmental profile by signing global warming agreements with states and foreign governments, most recently one this month with the Australian state of Victoria. Schwarzenegger officials say the agreements are intended to force the federal government to take a more stringent approach to tackling global warming. But some critics note the signings have given Schwarzenegger opportunities for photo-ops with foreign leaders, and Democrats have raised concerns that the Republican governor is using the deals to predispose California to a market-based system in which companies can buy their way out of emissions reductions. Each of the...