U.S. Senator Dora is very concerned about the lack of insurance for working adults who cannot afford the insurance premiums. She proposes legislation that states are taxed sufficiently to provide health insurance coverage to them and that states with citizens earning higher than average incomes be taxed at a higher rate than others. Ethan, an administrative assistant, tells Dora that Congress is prohibited from taxing residents of one state at a higher rate than citizens of another state. Which of the following is true regarding Ethan's statement? Question 23 options: He is incorrect. The U.S. Congress has complete discretion on taxation. He is incorrect, but before the U.S. Congress taxes one state's residents at a higher rate than citizens of other states, an important need must be shown. He is correct. He is incorrect, but before the U.S. Congress taxes one state's residents at a higher rate than citizens of other states, a disparity of income of over 30% must be shown. He is incorrect, but before the U.S. Congress taxes one state's residents at a higher rate than citizens of other states, a compelling need must be shown