可以修订欧盟条约，将地区政府和市议会（如加泰罗尼亚和巴塞罗那）的财政自主乃至拥有自身财政货币（fiscal money）的权利写入其中。
The EU treaties could be amended to enshrine the right of regional governments and city councils, like Catalonia’s and Barcelona’s, to fiscal autonomy and even to their own fiscal money.