He shouldn't shoulder less responsibility.
He should pay the same rate of payroll tax that everyone does.
He should pay the same rate on his capital gains and dividends that everyone does.
He should pay 35% on the income over $373,650.
He should pay 33% on the income between $171,850 and $373,650.
He should pay 28% on the income between $82,400 and $171,850.
He should pay 25% on the income between $34,000 and $82,400.
He should pay 15% on the income between $8,375 and $34,000.
He should pay 10% on income between $0 and $8,375.
I am sure he does but likely almost all his income comes from capital gains which are 15%. And Capital Gains income isn't subject to payroll taxes... So really the taxes look like this
He should pay 35% on the income over $373,650.
He should pay 33% on the income between $171,850 and $373,650.
He should pay 28% on the income between ~$115,000 and $171,850.
He should pay 43% on the income between $82,400 and ~$115,000.
He should pay 40% on the income between $34,000 and $82,400.
He should pay 30% on the income between $8,375 and $34,000.
He should pay 25% on income between $0 and $8,375
He should pay 15% on capital gains
The bolded assumes he files as a single. A family that reaches that income level by having two income earners pays payroll taxes for both. So the family with two income earners will pay up to
48% up to about $230K if most of their income is from salary.