A version of this story appeared in CNN’s What Matters newsletter. To get it in your inbox, sign up for free here . CNN  —  When sultans tried to give President Martin Van Buren lavish gifts, he did what the Constitution requires and asked Congress what to do. Two live lions had been gifted to Van Buren by the Sultan of Morocco at the US consulate in Tangiers in 1839 and the Sultan of Oman tried to give him “ horses, pearls and other things of value, ” delivered by ships in 1840. “I deem it my