Union workers credit services credit card?

I received a letter saying that I’m pre-approved for a union workers credit services credit card with a credit limit of $10,000 with an interest rate of 5%. I just have to a $37 fully refundable fee.
Is this a real bank?? It sounds too good to be true

It’s a scam….stay away.
See complaints at: http://www.ripoffreport.com/Search/union-workers.aspx