Donald Wayne Riegle Jr., who represented Michigan in Congress for nearly three decades under seven presidents and switched from the Republican to Democratic Party mid-career, has died at age 88, his family announced Sunday. Riegle died Friday of cardiac arrest at his home in San Diego, with his wife of 48 years Lori Hansen Riegle by his side. He served in the United States House and Senate from 1967 to 1995 and was best known for leading Senate opposition to North American Free Trade Agreement (