Can't You Lock The Place Down?

I'm sure this is about not being able to get assurances that May would lock down half of Central London, which she really can't.

Donald Trump has told Theresa May in a phone call he does not want to go ahead with a state visit to Britain until the British public supports him coming.

The US president said he did not want to come if there were large-scale protests and his remarks in effect put the visit on hold for some time.