Why the federal government imposes taxes?

Why the federal government imposes taxes?
The federal government imposes taxes upon its constituents as a means to pay government officials for their efforts, to subsidize public works projects and provide funding for government agencies. The 16th Amendment to the US Constitution allows the government to levy taxes on forms of income as it sees fit. Simply stated, these income tax provisions act as a transfer and redistribution of wealth, indeed an inefficient one.
The government lowered income tax rates on the higher incomes.