By all accounts, former Trump campaign chairman Paul Manafort has been cooperating with investigators, and has been handing over information they've requested. That should make for a fairly smooth investigation that stays within its supposed parameters.
Fishing expeditions are different matters, though, and independent counsel investigations usually turn into fishing expeditions. They have unlimited time and unlimited budgets, and they feel compelled to find someone to indict so they can justify their existence. And often, the "crimes" they uncover are not even related to the original reason for the investigation.
