Again, Art, I respectfully disagree ... I don't think its clear from what I've read from the ATF site that rogerdude is 100% in the clear ... I suspect he and his father will be left alone, I also suspect that a cleaver lawyer could weasel his way around it ... but a staunch anti ATF agent and a slimy anti gun DA could make some serious trouble for them over this, and there's no guarantee they'd come out on the happy side of it.
Anyway, I really wish El Tejon or one of the other actual lawyers on the forum would weigh in on this one.
I am a lawyer, though to be honest, I have not handled a straw purchase case. I don't have time to go into a detailed analysis right now, but I believe the poster I quoted above is correct. While the possibility of the ATF going after this type of purchase may be low, it could be possible under current law to prosecute the father, based on the information provided.