Schiff should know that what he did was a crime.
Penal Code 134 PC is the California statute that makes it a crime for a person to prepare false evidence with the intent to use it in a legal proceeding. This is an obstruction of justice crime in California.
The code section states:
Every person guilty of preparing any false or ante-dated book, paper, record, instrument in writing, or other matter or thing, with intent to produce it, or allow it to be produced for any fraudulent or deceitful purpose, as genuine or true, upon any trial, proceeding, or inquiry whatever, authorized by law, is guilty of felony.
John 8:44 is the key to all of this.
And Fat Sessions continues to fiddle his bagpipes.