rights issue

May said modern slavery was "the greatest human rights issue of our time" but also "destabilises economies".

In February last year, Australian writer Yang Hengjun, known for blogging about human rights issues in China, was handed a suspended death sentence on espionage charges.

Questions about civil rights issues often came in via email or phone, lawyers said, and they aimed to resolve them without drawn-out investigations or legal action.

The move raises serious legal, logistical and human rights issues.

Another major question is how Johnson would treat human rights issues in Mexico.