Well, we can, but we'll have to dispose of all the Commies in Congress first to get the tax rates lowered.
Congress is small matter. It's far more difficult to deal with 49% of US families and 47.8 million individuals who depend on social security disbursements to live. Their food is paid for by your taxes.
Some of those recipients are genuinely unable to work due to illness and should be cared for by the society. But the majority is formed by people whose entire occupations are wiped out; by those who are older and cannot find a job; and by those who are career welfare recipients.
In essence, we are all passengers, locked in a vehicle that speeds down a mountain road without brakes or steering. The government gave up on trying to fix things, even if we believe that at some point they wanted to. It was an exciting ride since the US dollar was detached from gold and was printed left and right. But we are running out of the road ahead.