Potential adopters are set to be given a more active role in selecting a child and granted the same maternity and paternity paid leave arrangements as biological mothers and fathers.
The Government wants to make changes to the current system in an attempt to find hundreds more volunteers to home 4,000 youngsters on a national register.
More top news
Investigators believe Mr Kushner has significant information relevant to their inquiry, officials told NBC News.
The men were detained as part of an investigation by MI5 and the Metropolitan Police's Counter Terrorism Command.
As a minute's silence in honour of the Manchester bomb victims ended, a spontaneous singalong of Oasis' Don't Look Back in Anger broke out.