If you're talking about pastors/priests in the larger denominations, you have to point the finger at the leadership within those denominations. However, the problem is often the up and coming pastor/priest spits out the answers the denomination wants to hear in order to receive their papers and then start teaching something else later. In that case, you still need to point at the leadership who hasn't revoked the paperwork. And there are some of these people using the name of organized denominations who were never ordained by the leadership and, for some reason, get away with using the denominational name for their church. This group of people, if they want a piece of paper to "prove" they're a pastor, can go online, fill out a form, and receive a document at no cost.