I have two questions for which I couldn't find the answer: 1 - Will these companies provide data from all users or only US citizens? 2 - Who has access to the

I have two questions for which I couldn't find the answer: 1 - Will these companies provide data from all users or only US citizens? 2 - Who has access to the data? Only people working on this program at US intelligence or a wider set of people? For instance, can they look up my emails, photos and so on if I am about to be interview for high profile government job?