IG Horowitz does this stuff all the time, regardless of Pres. Trump. It’s his job. The DOJ IG website shows half-dozen to a dozen reports per month.
https://oig.justice.gov/reports/all.htm
Paul Sperry posted the information as breaking news. The report has been on line for 2 months. Interesting, though, that the IG opened 8 new investigations into official misconduct from April to September. The FISA investigation has been going on a lot longer than that, hasn’t it?