@coo15257_cook@TruthFairy131 No their distrust came from their drinking, and fighting, and their living areas were a source of cholera which wasn't a common disease in that era in the united states. It took assertive action by Irish leadership to get them to conform to American norms before trust developed.
I would find anyone who makes such a promise and doesn't show up to be contemptible. Sure "we should get lunch" can be a vague pleasanty, but once you make an appointment failing to show, especially without informing the other person, is low behavior. It shows contemptible for their time and they're not getting time back.
@oidonhagouda Here is how you filter the anti-assimilationist Muslims. Upon arrival a potential immigrant is given a black dog that they must keep and care for in their home. Regular animal control inspections ensure compliance.