There are a lot of "It Depends" possibilities here, but if the crime crosses state lines in the US, the FBI will be involved.
Either the FBI or nobody because they have bigger fish to fry.
There is no such "Act." The Federal Bureau of Investigation investigates crimes against the United States - therefore THEY are the logical and the only law enforcement agency that COULD investigate Treason.
The FBI is a Federal law enforcement agency responsible for security and law enforcement in the United States.
the answer is the (DEA)
The Drug Enforcement Agency or (DEA)
Commonly referred to as "The DEA." It is an agency of the federal government dedicated to the enforcement of all laws dealing with drug policy.
The highest law enforcement agency in the United States is the Federal Bureau of Investigation (FBI).
It depends on the specific agency.
In the United States, this is the DEA (Drug Enforcement Agency).
A federal law enforcement agency that is the principal investigative arm of the Department of Justice
The Federal Trade Commission was created to investigate businesses for wrongdoing, and to facilitate the enforcement of laws. It was established in 1914.
U.S. Marshals... BALLIN'