After graduating from Yale University in 1968 and Harvard Business School in 1975, he worked in the oil industry. Bush married Laura Welch in 1977 and unsuccessfully ran for the U.S. House of Representatives shortly thereafter. He graduated in 1975 with an MBA degree. He is the only U.S. president to have earned an MBA. Prior to getting married, Bush struggled with multiple episodes of alcohol abuse. He graduated in 1975 with an MBA degree. He is the only U.S. president to have earned an MBA. Prior to getting married, Bush struggled with multiple episodes of alcohol abuse.