Because I can understand the English language. It is my mother tongue.

instant reply to Mr. Ehrlichman asking, "How do you know that, Mr. Chairman?" after Senator Ervin insisted that 18 USC 2511 on foreign intelligence would not allow the President of the United States to authorize a burglary to obtain the opinion of Ellsberg's psychiatrist about his intellectual or emotional or psychological state, as claimed by Ehrlichman. Tuesday, July 24, 1973. Citation