I know the limits and the way reporting works when sending money overseas, but with MG and WU being enemy companies for the same trade, and with ID being needed for transactions over 1000, you think the system they put your info in stores data from both companies? So instead of doing $4000 at Western Union, you do $2000 at MG and $2000 at WU to avoid suspicion and reporting.
That is called structuring, which gets you an additional felony.