Not saying you're wrong, but arguably you'd want it to be your own to take you down, not your enemy
Dems could point to this as proof of their devotion to honesty and transparency
It never starts big
They bring in the small fries to make the big dogs nervous
Put pressure on the little guys, get them to flip for lesser charges, then wait for the big target to fuck up
Because manafort has deep dem connections, and left the campaign shortly after trump got the nomination