The White House is resisting calls to ban travelers from ebola-affected areas of West Africa from entering the United States.
The Obama administration is under pressure from political opponents - and even some allies - to impose stricter travel restrictions in response to the outbreak.
White House spokesman Josh Earnest says the US president's view remains that a ban would actually put Americans at greater risk.
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But Mr Earnest also said that President Obama is not "philosophically opposed" to a ban, if circumstances were to change.
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