By Charles Scanlon
BBC News, Miami
**The US has lifted a 22-year immigration ban which has stopped anyone with HIV/Aids from entering the country.**President Obama said the ban was not compatible with US plans to be a leader in the fight against the disease.
The new rules come into force on Monday and the US plans to host a bi-annual global HIV/Aids summit for the first time in 2012.
The ban was imposed at the height of a global panic about the disease at the end of the 1980s.
It put the US in a group of just 12 countries that excluded anyone suffering from HIV/Aids.
However, improving treatments and evolving public perceptions have helped to bring about the change.
The new regulations will enable sufferers of the disease to attend the global Aids summit hosted by the US in two years time.