Secret Puzzles

I love secret puzzles! Sierra Trading Post's catalouge not only has great deals, but somewhere, in one of the item descriptions, it has a question that, if answered, will get you free ground shipping on your entire order. This kind of secret challenge is not only really cool, it says that the staff are of a certain calibar and quality that I approve of. Yet another reason to buy from them. This one says—

"Born in Brazil, this leader improved the state union, did time in the house, was cleared by the White House and never returned to the Lake Orion House. His middle name was Riddle. Tell us his name and earn free ground shipping on your entire order (not valid with any other special offers)."