So a prior job 2 years ago involved regular travel to the US, I applied for and received an ESTA against my British passport - this expires very soon, so consider it no longer valid for the purposes of this question.
My new role will be requiring both US and EU travel on a regular basis, considering the upcoming Brexit uncertainty regarding access to the EU for British citizens I'm considering switching over to my Irish passport for all business travel going forward (my employer only allows me to hold 1 passport in their system for the purposes of travel).
Given the above, my question is: would anyone anticipate any issues in applying for and using an ESTA for the US against my Irish passport given the expired ESTA against a British passport in the same name?
(I'm obviously anticipating the possibility of larger queues etc. at Dublin pre-clearance, or US side clearance as I won't be able to use the electronic system on first visit.)