Setback for Donald Trump as US Senate rejects move to repeal parts of 'Obamacare'

Senators in the US have rejected a measure to repeal parts of former president Barack Obama's healthcare law after a night of suspense, dealing a serious blow to President Donald Trump's agenda.

As they were unable to pass even a "skinny repeal", it is unclear whether Senate Republicans can advance any health bill despite seven years of promises to repeal "Obamacare".