If I understand Republicans correctly, they view government as being filled with "waste, fraud, and abuse." They contend that if government has any legitimate reason to exist, these irregularities must be eliminated. Further, they claim that because Republicans fulminate the two prior contentions, they deserve to be elected to whatever board, commission, legislature, or executive office they seek.
EB-5 may be a complicated mess, but it's a prime example of wasting millions and abusing any system of adequate checks and balances. Whether the legal definition of fraud occurred may be an open question, but the whole affair has the stench of corruption.
EB-5 occurred under Mike Rounds watch. Republicans allege ending "waste, fraud, and abuse" is their raison d'être. If a Republican enabled such practices rather than ended them,,one would hope voters would end that Republican's, in this case Mike Rounds, career.