Is this right for Americans? Do you personally think it's right?

Americans pay taxes on earned income and general worth until a certain point when suddenly they are able to pay none because of certain loopholes and so forth. When they become what we call rich, the opportunities to hide money in certain non-taxable areas are there for these people. If we all paid as little as 8% no matter who you are, is this the right thing to do? Multi-millionaires will still be required to pay millions of dollars in taxes instead of none. What do you think?