Assuming that your visits to the USA using B-1 / B-2 visas were shorter than 31 days (and when ), they generally would not influence your taxpayer status. So I am generally inclined to assume that for 2019 you would be a non-resident alien. This plus that fact you do not have any income from US sources, leads me to say there is no reason for you to file a tax return. If you did have income from US sources, you would have to file a form 1040-NR ( which is not supported by TurboTax --- their partner SpinTax takes of these forms ). Good Luck
