In the current discussions about our duties (of justice) towards refugees, feasibility constraints are often invoked to justify the limits of what can be done: Austria has to close its borders and limit the number of daily asylum applications due to feasibility constraints, the feasibility limit of refugees admitted to the European Union as part of the current resettlement scheme with Turkey is set at 172.000 or mayors of various cities claim that it is not possible for them to shelter refugees.
Following these debates, I often gain the impression that infeasibility claims are invoked far too easily. Hardly ever they are based on feasibility studies and often they seem more of an excuse to shy away from our duties (of justice). At the same time, powerful arguments for the need to account for feasibility constraints when identifying our duties of justice in the non-ideal real world have been put forward in the literature on non-ideal theories of justice: what justice demands from us should not go beyond what we can possibly do. How is it possible to account for feasibility considerations in this later sense, without allowing them to become a cheap excuse in political debate to shy away from our duties of justice towards refugees?