Holy S you can't be nearly as dense as the character you play on BF. Folks who break laws in one regard usually break laws in other regards. A la Al Capone. His tracks were covered really well when it came to murder, but not so good when it came to tax evasion. The feds didn't 'cook' anything up...they just found charges that they could stick in places they didn't initially intend. It's standard protocol for federal investigations.