Same message as everyone else.  CONGRESS NEEDS TO ACT NOW, BUT THEY ARE FIXATED ON HILLARY CLINTON!  Put these scammers in jail.

Called July 2, 2016. Same time frame as other reports here. Same threats. Not dumb enough to even call back. Searched internet to validate it's just another scammer. Kinda harsh but agree with Jose's comments above. Something needs to be done to stop these low-life scum from continuing these practices. May they all rot in hell!

a threat that I will go to jail. Or federal
Court

Threatenting call for money

Scam Call......305-831-4639
Received automated phone call stating this is an attempt to contact regarding a serious enforcement action by the US Treasury.  Wants a call back to talk to make arrangements or face Federal Criminal Action before a US Magistrate, or Grand Jury.
FYI, if enforcement agency EVER wants to take action against a US Citizen, they will contact you in person or via Certified US Mail.