Probably not in the US, but keep in mind that very often in many other places, what the person selling access is also doing is screening for the person whose access is being sold.
This sort of arrangement works pretty well if the person selling the access is actually offering a decent service to both sides. However, it needs to be mutual, pre-arranged, and with plenty of duties all around (in most of the world "duties" end up meaning "kickbacks" but the system won't work if it is limited to that).
I get that screening is a service, but it's very gray. US (& UK) companies need to act with a higher standard globally. Barclays got in trouble with some corporate matchmakers.
This sort of arrangement works pretty well if the person selling the access is actually offering a decent service to both sides. However, it needs to be mutual, pre-arranged, and with plenty of duties all around (in most of the world "duties" end up meaning "kickbacks" but the system won't work if it is limited to that).