Friend of mine is head of IT for some government agency. Not a spooky one - just a routine agency. However, given the nature of IT and the data they need to store - they are required to get security clearance.

For him it's been a minor nuisance at worst. He has strong restrictions on travel. I think he needs approval to travel abroad. He has relatives in other countries and visits them often, so it can't be too much of a nuisance.

I believe he told me that he does have to report details of where he went in each country and who he interacted with upon his return. Not sure about the details.

Official website: https://www.dm.usda.gov/ohsec/TravelResource.htm