Originally Posted by noturbulence

Have only used preclearance in Canada so far and there they wear the TSA uniforms. Not sure whether these are actually US personnel on secondment to Canada but I would doubt that. And the same problem would apply to Ireland (which I have not used yet) and it would really very much surprise me if they send US personnel over there to perform these tasks. My guess is that these are local contractors, supplied with TSA uniforms and probably subject to frequent compliance checks by US supervisors.