Excuse?
Who has to excuse for what?
Your comparison is so absurd. Has the EU acted as if the UK population didn‘t opt for Brexit? Has it played UK government? Where‘s the parallel between Brexit and the way Trump is acting now?
BTW, it‘s funny you blame the EU for the UK maneuvering itself into multiple dilemmas by wanting to leave the EU while intending to leave the border to EU member Ireland open. It‘s not the EU‘s problem. But again: no relation to the Trump topic.