Donald Trump has resurrected a hallmark policy of his first term, announcing a complete ban on citizens from multiple countries from entering the US - and has placed restrictions on others ...

and historically refusing to take back their own citizens who overstay in the United States. The new ban targets Afghanistan, Myanmar, Chad, the Republic of Congo, Equatorial Guinea, Eritrea ...

The ban took effect on Monday and comes as tensions escalate over the president’s campaign of immigration enforcement.

Trump cited an attack in Boulder, Colorado, where a man threw a petrol bomb into a crowd of pro-Israel demonstrators, as proof of the need for immigration curbs.