Legislative actions cannot be effective in this way. Any metric the government specifies can be worked around. Harvard can say outwardly they don't prefer legac

Legislative actions cannot be effective in this way. Any metric the government specifies can be worked around. Harvard can say outwardly they don't prefer legacy students but they can just pad any of the subjective measurements they use like "likability" or "personality" in their favor. As long as it's not something they blatant write to each other in subpoena-able communications it would be very difficult to notice and prove they are purposely favoring whatever trait they want in students.