Why? When is money within a family a right to anyone else?
I personally believe in a Socialist Tax System where there are ZERO TAXES on income, Just a National Sales Tax that is equal for everyone, rich and poor and where food and medicine and essentials for life ARE NOT TAXED. That is too Socialist of course for most people because they are not smart enough to grasp how much more fair and efficient it would be.
0 Percent on Inheritance tax also.