Yes, I think spy agencies should be able to spy on foreigners, and swap data. I don't think it's insane for the laws against collection of citizens data to incl

Yes, I think spy agencies should be able to spy on foreigners, and swap data. I don't think it's insane for the laws against collection of citizens data to include not trading for citizens data with foreign powers, such that the set of people that the UK and US spy agencies share data on is the disunion of their respective citizens. As with many things that involve crimes of thought or information, it's very hard to implement, and as such you should be careful how you phrase and prosecute, but that's a risk that has to be taken... And the penalties for when it's discovered should be appropriately severe to make up for that.