The lawsuit seeks to overturn the Trump administration's reversal last month of the 2009 ruling that underpins all US policies aimed at lowering emissions.

The lawsuit seeks to overturn the Trump administration's reversal last month of the 2009 ruling that underpins all US policies aimed at lowering emissions.

Lawsuit says rescission of endangerment finding – which ruled greenhouse gases threaten public health – was illegal

Twenty-three states and cities sue Trump administration to reverse climate regulation rollback and protect public health and environment.