[JURIST] US President Barack Obama [official website] has been urged to stop deportations to Haiti on humanitarian grounds. More than 3,000 Americans signed a letter [text, PDF] sent to the president on Thursday, claiming that deportees are immediately imprisoned upon return to Haiti and can suffer illness-related deaths as a result of the unsanitary and inhumane conditions of the jails. Since the earthquake in January 2010, Haiti has suffered from a cholera epidemic [CDC backgrounder] resulting in more than 5,300…