(CNN)National security adviser Robert O'Brien said Sunday that the Trump administration is likely to announce new restrictions on travel to Brazil.

O'Brien, during an interview with CBS' "Face the Nation," said the administration is likely to make a decision about restricting travel to Brazil on Sunday, and said White House officials "hope that will be temporary." He said the White House would "take a look at the other countries on a country by country basis" in that region.

Asked about reporting that the European travel restrictions from mid-March came to late to stop the virus from spreading throughout the US, O'Brien highlighted President Donald Trump's decision to restrict some travel to China but suggested US officials were unaware that people traveling through Europe from China could bring Covid-19 to America in the weeks before the European travel restrictions were implemented.