In an identity theft case, How much money is stolen before it becomes federal?

I need to find out when Identity theft becomes a US Federal Crime.In an identity theft case, How much money is stolen before it becomes federal?
It already is a federal crime.In an identity theft case, How much money is stolen before it becomes federal?
There is no dollar amount involved to make it federal. Instead, it is the use of federally insured banks, use of interstate electronic systems, use of a social security number, and such
Transferring a stolen pin number or other protection method (passwords, etc) across state lines makes it a federal crime even without any money being taken.