Had a friend where his wife needed to visit US for about four days and needed a visa.
She gets rejected because "How do we know you will not remain in the US after your visa term expires?". That was the first dumb-ass excuse.
That couple personally own 55% of a chain of .. around 380 international hotels - including a number in the US, - and currently buying majority shareholding in a well-known US hotel chain and completing a deal for the purchase of a cruise line.
Like she needs to become a "illegal alien" in a country she has no desire to live in anyways??
No biggie in the end - the incident was cleaned up after a phone call to the US embassy.