US temporarily bans green-card holders from entering country from African nations

Order aimed at preventing spread of Ebola to US affects travelers who have visited three countries in last 21 days

US authorities have temporarily banned green-card holders from entering the country if they have traveled to the Democratic Republic of the Congo (DRC), Uganda or South Sudan in the last 21 days.

The order issued on Friday is part of an expanding attempt to prevent Ebola from entering US borders. A previously announced travel restriction blocked only people without US passports who had visited those countries from entering but exempted US citizens and lawful permanent residents.