Since becoming US President, Donald Trump has done his utmost to unpick the patchwork of policies that the Obama administration had stitched together. But despite having a minority in both houses of Congress, Trump's Democratic rivals have fresh wind in their sails. Up and down the country, protest movements and new politicians are doing all they can to unseat Republicans ahead of next year's midterm elections. Our correspondents report.
A programme prepared by Charlotte Prudhomme.
Historian and expert on US foreign affairs