I don't remember Pawlenty switching parties
A regional, market-based pollution strategy for carbon dioxide mirrors an earlier effort to reduce acid rain.

By Bill McAuliffe and Paul Walsh, Star Tribune
Through a system of buying and selling rights to emit carbon dioxide, nine Midwestern states and the province of Manitoba will work together to reduce air pollution linked to global warming.
Gov. Tim Pawlenty was joined by eight other governors and the premier of Manitoba in an agreement Thursday on a regional, market-based strategy for controlling carbon dioxide emissions from power plants and other facilities.
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