That’ll erode america’s financial system fairly quickly.
You can’t sanction Ireland, without sanctioning the EU, also China and India won’t agree to that, so there goes 80% of the people you trade with.
Why do you think the rest of the EU wouldn’t be on board? Nobody in the EU is happy with Ireland’s corp tax rate. China’s corp tax is 25%, India’s is complicated but around the same (in practice), PRC and India don’t want its rich people and global corps abusing tax shelters either.
How does something like this generally work? Is it as simple as sanctions and/or tariffs?