Not sure I agree with all of you on the Snn stopover as it affects Aer Lingus.Despite all the rhetoric over the years I can't recall Aer Lingus calling for an end to it ( Iknow !I know! about the political angle). But look at it this way. Aer Lingus already has a base at Snn which they need for UK/EU flights ,and which handles T/Atlantic flights with probably no huge extra cost , as the staff will be there anyhow. Now a US airline wanting to fly to Dublin must operate a one for one at Snn. This involves setting up at Snn with a huge cost in staff, special security etc.etc. and then replicating these costs in Dublin.All of ths probably makes the route marginal and discourages only the most determined.The more US carriers you discourage the better and the higher yeild for Aer Lingus.So it's not as simple as it seems.