I live in the US and have a green card. If I leave the country, will I be allowed back in? | Arwa Mahdawi

Even a summer holiday isn't straightforward any more - and all across the US, millions of people are having to make calculations like mine

Let me start with a message to my wife. SORRY!!! I apologise in advance for everything you are about to read.

My more sensible half, you see, is a US citizen, who keeps telling me (a green card holder) that I should stop making jokes about getting sent to a detention centre or deported.

Arwa Mahdawi is a Guardian columnist