2009年，奥巴马总统就任后，继续小布什总统的工作，解除该禁制令。
Ban on HIV positive persons
Under President Ronald Reagan, the US Public Health Service added Aids to its list of "dangerous and contagious" diseases. Senator Jesse Helms' "Helms Amendment" added HIV to the exclusion list.
In 1987, the US banned HIV positive persons from arriving in the US. The laws were influenced by homophobic and xenophobic sentiment towards Africans and minorities at the time, as well as a false belief that the HIV virus could be spread by physical or respiratory contact. Former US President Barack Obama lifted it in 2009, completing a process begun by President George W Bush.
