You're both putting words in my mouth. If you check my posts, my point was that I would expect a hotel to check ID only when the corporate rate is substantially lower than the rate that everyone else is paying. So to suggest that you would have to go through these hoops for every or even most clients is simply not true.

In fact, Marriott has adopted a variant of my proposal with regards to the government rate. As that rate can be substantially cheaper than other rates, ID is often required. By comparison, I've been asked for my AAA card exactly once as far as I can remember, and I have yet to be asked for my ABA card at any hotel.

It is very reasonable that if a given rate code, such as the govt rate, is prone to abuse, then the guest should expect to provide proof of eligibility. However, if the rate code is not prone to abuse, the hotel should not make a big deal about it, particularly if the rate code permits contractors and other non-employees to use it.