Complex sentence: Friends of the Earth, an international environmental organization, announced its opposition to ACES believing the bill to be too weak and cited support from Shell Oil Company and Duke Energy as evidence of the bill's shortcomings.
Split into simpler sentences: Friends of the Earth, an international environmental organization, announced its opposition to ACES as they believed the bill was too weak. They cited support from Shell Oil Company and Duke Energy as evidence of the bill's shortcomings.