The treaty trader must be a national of a country with which the United States maintains a treaty of commerce and navigation
The treaty trader must carry on substantial trade, principally between the United States and the treaty country (E-1)
The volume of its transatlantic trade is significant and continuous and if its Irish-US trade makes up more than 50% of its total international trade, then the business could qualify for Treaty Trader status and the owner of the business or some of its employees might be eligible for E-1 visas.