A case like this has been building long before LL got on the scene, and it’s a dual investigation between the US and Switzerland, not just the DOJ.
But the prompt may have been the FIFA elections this Friday, which now look like they’ll be delayed a few months.
You are correct. This has been in the works for a while. The big fish was nabbed last year, Chuck Blazer. He was the US representative on FIFA’s board from 1996-2013. The DOJ flipped him and he is singing like a canary.