16th Amendment: The 16th Amendment refers to an amendment added to the United States Constitution in 1913 that granted Congress the power to tax income.
Income Tax: Income tax is a type of tax levied on an individual or entity's earnings or income. It is based on a progressive system where higher incomes are taxed at higher rates.
Tax Legislation: Tax legislation refers to laws and regulations enacted by Congress that govern taxation, including income taxes. These laws determine how taxes are calculated, collected, and enforced.