Hollywood star and UNHCR Goodwill Ambassador Angelina Jolie (R) visits people displaced by the floods in northwest Pakistan at the Kandaro II Camp in Nowshera, Khyber Pakhtunkhwa province September 7, 2010 . Photo by Jason Tanner/ UNHCR/Parspix/ABACAPRESS.COM

Nowshera, Pakistan. 07/09/2010 UNHCR Goodwill Ambassador, Angelina Jolie meets 64 year old Zenul Hawa at her flood damaged home in the village of Mohib Bandi, on the outskirts of Nowshera, Khyber Pakhtunkhwa. Her home was one of the first to be flooded, located just 200m from the banks of the Kabul River.

(FILES) Dated April 10, 2010 filed photo shows US actor Sean Penn is seen at a makeshift camp for people left homeless by the January 12 earthquake at the Petionville golf club in a suburb of Port-au-Prince as people are evacuated from the camp. It seems hardly a day passes without Congress throwing aside tradition and inviting Hollywood stars to push their pet causes on Capitol Hill, even as important legislation stalls and midterm elections approach. The list is long of stars who have testified before enthralled lawmakers: Nicole Kidman backs women's causes, Sean Penn fights for Haiti, Kevin Costner has solutions for oil spills. But the phenomenon peaked with the controversial presentation of political satirist Stephen Colbert whose appearance -- and comments on a timely topic like immigration -- turned into a one-man show. AFP PHOTO / Thony BELIZAIRE / FILES

Mia Farrow, UNICEF Goodwill Ambassador, administers polio drops to a young baby in Ndjamena Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign launched today. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Clako Ali, four years old, who contracted polio last year, is helped to stand up in her braces by Mia Farrow, UNICEF Goodwill Ambassador, at her grandmothers home in Ndjamena Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a national polio vaccination campaign. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, administers polio drops to a young baby in Ndjamena Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign launched today. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, administers polio drops to a young boy in Ndjamena Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign launched today. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, addresses a community gathering about the importance of immunising children against Polio in Bol, Western Chad, Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNCIEF Goodwill Ambassador, talks to a young boy at a community meeting in which she addressed a group of women and children about the importance of vaccinating against polio in Bol, Western Chad, Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Marcia Babille, Head of UNICEF Chad, (C) explains to Mia Farrow, UNICEF Goodwill Ambassador, about the new plumpy nut delivery at the therapeutic Feediing centre at the general hospital that is supported by UNICEF in Mao, Western Chad, Chad. Mia Farrow, a UNICEF Ambassador, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow (R) UNICEF Goodwill Ambassador, talks to a mother and a doctor about her severely malnourished child at a therapeutic feeding centre that is supported by UNICEF in Mao, Western Chad, Chad. Mia Farrow, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow (R) UNICEF Goodwill Ambassador, accomapanies by a UNICEF staff member from Mao, talks to a mother about the condition of her severely malnourished child at a therapeutic feeding centre that is supported by UNICEF in Mao, Western Chad, Chad. Mia Farrow, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, helps a local dignitary plant a tree to help stop desertification in Mao, Western Chad, Chad. Mia Farrow, a UNICEF Ambassador, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, holds a severely malnourished child at a therapeutic feeding centre that is supported by UNICEF in Mao, Western Chad, Chad. Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow (R) UNICEF Goodwill Ambassador, accomapanied by a UNICEF staff member (not shown) from Mao, talks to a mother and a doctor about her severely malnourished child at a therapeutic feeding centre that is supported by UNICEF in Mao, Western Chad, Chad. Mia Farrow, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador addresses a group of internally displaced people about the importance of polio vaccination at a camp in Goz Baeda, Eastern Chad, Chad. Mia Farrow, is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Marcia Babille, Head of the UNICEF Chad country office poses for a photograph behind a group of children at a settlement for displaced people in Goz Baeda, Eastern Chad, Chad. Dr Babille was accompanying Actress Mia Farrow, a UNICEF Goodwill Ambassodor on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

Mia Farrow, UNICEF Goodwill Ambassador, talks to a young boy, Bekele, who lost both of his arms after an accident involving unexploded ordinence in Goz Baeda, Eastern Chad, Chad. Actress Mia Farrow is on a week long visit to Chad to highlight the start of a nationwide polio vaccination campaign that it being launched at the end of this week. Chad had 65 cases of polio diagnosed last year amongst children and there is fear that it could spread. ? Kate Holt / eyevine ? Kate Holt / eyevine

UN Refugee Agency (UNHCR) goodwill ambassador Angelina Jolie listens on September 12, 2009 to a Somali refugee recounting her recent flight from Somalia and her problems in the overcrowded Dadaab refugee camp on the Kenya-Somali border. Jolie visited the camp to highlight the forgotten plight of Somali refugees and to appeal for solutions to the overcrowding. AFP PHOTO / UNHCR

PHOTO: AFP/EAST NEWS In this handout photo provided by the United Nations High Commissioner for Refugees (UNHCR), American actress and UNHCR Goodwill Ambassador Angelina Jolie speaks with internally displaced Iraqis (IDPs) at a makeshift camp northwest of Baghdad on July 23, 2009. Jolie was on a one-day mission to Iraq to bring attention to the plight of displaced people in the region. RESTRICTED TO EDITORIAL USE GETTY OUT AFP PHOTO/HO/UNHCR/B. Heger