US Congress commits to act on climate crisis, despite Donald Trump

Nancy Pelosi tells UN conference in Madrid that commitment is 'iron-clad'

The US will take action on greenhouse gases and engage with other countries on the climate emergency despite Donald Trump's rejection of international cooperation, a delegation from the US Congress has told the UN climate conference in Madrid.

Nancy Pelosi, the speaker of the House, struck a defiant stance on Monday, declaring: "Congress's commitment to action on the climate crisis is iron-clad. This is a matter of public health, of clean air, of clean water, of our children, of the survival of our economies, of the prosperity of the world, of national security, justice and equality. We now must deliver deeper cuts in emissions."