Look at them funny and walk off, or close the door if they came to your house. I've never heard of someone being questioned for sending money, and I don't understand what would cause WU to contact authorities in the first place unless you were standing there with a buddy while filling out the forms and bragging loudly about how big yall were both gonna get off all this gear yall were ordering. Even then, I'm willing to bet that 97% of the people working these WU stations inside of gas stations and grocery store could give two fucks if you were laundering money for Pablo Escobar himself and told them all about it. All they care about is when their miserable shift at minimum wage is finally gonna end for the day.