Electronically recorded call from a foreign-accented male voice, saying he is Officer Michael Thomas, demanding that my attorney or I call him back, with threaten of legal action if I don't return the call.  I set it up as blocked call, and a call came in again leaving the same message on voicemail.
Clearly a scam.  Do these idiots really believe the American public is likely to accept calls purportedly from the IRS by people with recorded foreign voices?