Gov. Bill Richardson seems to no longer be against federal pre-emption for climate change legislation, as long as the federal legislation is more stringent than his state's law. He believes that current legislation from Sens. Lieberman and Warner is a good starting point but he wonders, "Why can't we have higher goals and faster goals and move significantly more?" Pre-emption promises to be a hotly contested topic come the Senate floor debate this spring. Amendments are expected to be proposed and Sen. Lieberman's top climate aide, David McIntosh recognizes it could cause problems for the overall legislation. He said, "We need to prevent the state authority issue from becoming a poison pill, from becoming one of the rocks by which this ship breaks up."