Climate change, transport and freedom, security and justice are key issues for the European Union's regional group. The Committee of the Regions' (CoR) plenary session, to be held this week, will reflect on the main themes in current EU institutional and political affairs. Newly-elected European Commission president, José Manuel Barroso, and the European Parliament president, Jerzy Buzek, are set to join the 344 locally and regionally-elected politicians which make up the CoR. The CoR has invited Elizabeth Kautz, vice-president of the US Conference of Mayors, to speak about what local and regional politicians are doing on her side of the Atlantic in the battle against climate change.