As Jackson's national profile increased, so did his political involvement. Beginning in the late 1970s, he began traveling around the world to mediate or spotlight problems and disputes. He visited South Africa in 1979 and spoke out against the country's apartheid policies, and later traveled to the Middle East to throw his support behind the creation of a Palestinian state. He also got behind democratic efforts in the small island nation of Haiti.
While Jackson declined to run for the U.S. presidency again, he continued to be a force on the political stage, pushing for African-American rights and serving as a featured speaker at Democratic conventions.
Conservatism in the United States - Wikipedia
Still, there was no denying Jackson's impact on American politics and civil rights. In 2000 President awarded Jackson the Presidential Medal of Freedom. That same year he received a Master of Divinity degree from the Chicago Theological Seminary.