TRUMP COULD MAKE MEXICO PAY FOR THE WALL WITH A MODEST — SAY, 5% — TAX ON REMITTANCES: Mexican-Americans Sent Home Record $28.1 Billion in 2017. “Perhaps comically, remittances were actually Mexico’s biggest source of foreign income after auto exports, far surpassing the $20 billion that Mexico earned from oil exports and the $19 billion from tourism in 2017.”