A federal appeals court in the United States has ruled that the Government cannot force grantees who are receiving money for HIV programming to denounce and oppose prostitution through the so called 'anti-prostitution pledge'. This ruling only applies to American organisations (working anywhere in the world) not people who receive American funds in other countries. Open Society Institute and Pathfinder International argued that this funding restriction violated their Constitutional rights.
Read more on the court's decision http://randazza.files.wordpress.com/2011/07/hookers-decision.pdf
The Washington Post gives more detail http://www.washingtonpost.com/national/appeals-court-in-nyc-rules-first-amendment-prevents-us-from-requiring-anti-prostitution-pledge/2011/07/06/gIQAJQJo0H_story.html
Fox News also covered the story http://www.foxnews.com/us/2011/07/06/appeals-court-us-cant-force-anti-sex-work-pledge/