WASHINGTON (CNN) -- Former South African President Nelson Mandela is to be removed from U.S. terrorism watch lists under a bill President Bush signed Tuesday.

Nelson Mandela arriving in London last month for his 90th birthday celebrations.

Mandela and other members of the African National Congress have been on the list because of their fight against South Africa's apartheid regime, which gave way to majority rule in 1994.

Mandela shared the Nobel Peace Prize in 1993 with F. W. de Klerk, the South African president and National Party leader who worked with Mandela to end apartheid. Mandela replaced him as president in 1994 and served until 1999.

Recognized as a symbol of freedom and equality, Mandela will turn 90 on July 18.