I have used the elite interrogation line many times at AMS as a CO Silver.
However, I would ask why it matters. Once through the questioning, you are basically herded into a too-small waiting area with nothing to see or do. You do not get to board any earlier. I usually linger outside and wait to enter until the line is nearly gone, to avoid being couped up for too long.
Originally Posted by
SchmeckFlyer
Are these interrogations then only for US-based flights on US airlines, then? I have never had any questioning on BA flights from London. I've only ever experienced it on CO and NW departing from AMS on direct flights to the USA.
It is an AMS to US thing. Doesn't matter which airline, as far as I can tell. I have not had the same level of questioning at ZRH, CPH, or LHR.