...they have businesses so scared that just the mention of another person caused him to back away from a sale...
I wouldn't say that the FFL-holders are
scared, per se. My take on it is that if they are
diligent, they can cut down on the biggest problem of the "wrong people" getting their hands on guns. Well, at least through quasi-legal means.
The ATF&E will tell you that nearly HALF of their firearms investigations are for guns purchased by a straw purchaser. Most FFL holders want to be a part of reducing that number, because it makes them feel like
part of the solution and it helps to keep their business name out of the evening news.
In a successful straw purchase, the actual buyer is never specifically linked to the gun, but both the prohibited purchaser and the straw purchaser have committed a federal felony. The straw purchaser violates 18 U.S.C. § 922(a)(6)15
or 18 U.S.C. § 924(a)(1)(A)16 by falsely stating or falsely providing evidence that he or she is the actual gun buyer, while the prohibited purchaser (usually the actual buyer) is criminally liable for aiding and abetting the straw purchaser in such violations or in
"causing the making of the false statements".
Lying about this stuff is
"punishable by a fine of up to $250,000 and up to 10 years in prison."
Furthermore, if an FFL knew (or even suspected) that any statement on Form 4473 was false and that a straw purchase was taking place, the FFL has
also violated federal law.
18 U.S.C. § 922(d) prohibits any individual
"from selling a firearm to a person whom they know or have reason to know is a criminal or other prohibited buyer."
In theory, the FFL-holder can face the same punishment of
"$250,000 and up to 10 years in prison."
Remember that the guy on the other side of the counter prints his name and signs his name in boxes 33 and 34 of your form 4473. In addition to a lot of things, he is
CERTIFYING that it is his belief that
"it is not unlawful for me to sell, deliver, transport, or otherwise dispose of the firearm(s) listed on this form to the person identified in Section A".