There appears to be 1 FISA warrant outstanding for a person we've not seen named yet.
Veselnitskaya met with Don Jr., Kushner, Manafort and 'others' at Trump Tower.
So, there's a FISA on Don Jr. or Kushner based on this meeting.
https://www.nytimes.com/2019/01/08/nyregion/trump-tower-natalya-veselnitskaya-indictment.html