In a Point Carbon article on the California Air Resources Board's (CARB) recently released preliminary draft rules for a future carbon market, Kyle Danish comments on the differences between legislation just passed by Congress and the California rules.  He said, "In contrast, the federal cap-and-trade programme passed by the US House would let emitters use offsets to meet about 30 per cent of their compliance obligations. The (CARB) limit appears to be significantly lower than what is being contemplated in federal legislation."