President Donald Trump's new ban on travel to the U.S. by citizens from 12 mainly African and Middle Eastern countries is set to take effect Monday amid escalating tension over the president's unprecedented campaign of immigration enforcement.

President Donald Trump’s latest travel ban, targeting citizens from 12 predominantly African and Middle Eastern nations, takes effect Monday.

U.S. President Donald Trump's order banning citizens of 12 countries from entering the United States goes into effect at 12:01 am ET (0401 GMT) on Monday, a move the president promulgated to protect the country from "foreign terrorists.