We've been sending money to DR for decades, using the same place in Atlantic City forever. A year or two back, we had to send $3000 for something, I forget what, so I went to the bank and withdrew it. Mr. AE took it in, and they wanted proof of where the money came from. "they" being the company that the local store uses to send the money. Apparently it's a legal requirement, when you send over a certain amount. I'm not sure what that amount is.
We had no proof of anything, banks don't give you a receipt when you withdraw cash, or cash a check. They finally took the word of the woman in the store, who assured them she's known us for decades.