Inheritance tax on non-resident alien
My uncle passed away in Massachusetts state, I am the executor(Residing in CA) of this estate and my father and uncles are beneficiaries of the states. All my uncle's and father are non-resident aliens and don't live in US. My concern is "Will my father and uncle's are liable for inheritance tax". I understand that Estate is taxable, and being executor I will be responsible for it. But do my father's and uncle liable for any taxes in US. Please help me understand individual taxes obligation in US