Biden tasks Harris with tackling migrant influx on US-Mexico border
Mr Biden said he was giving her a "tough job" but that she was "the most qualified person to do it".

Mr Biden said he was giving her a "tough job" but that she was "the most qualified person to do it".
President Trump paid a visit to the US-Mexico border today, following a week of confusing comments over whether he'd shut it down and repeats 'emergency' claim.
The US is to send an additional 2,000 troops to its border with Mexico, the Pentagon has announced