The Archbishop of Chicago has told priests that they should not allow immigration officers on to Church property without a warrant.

“If they do not have a warrant and it is not a situation that someone is in imminent danger, tell them politely they cannot come on the premises,” Cardinal Blase Cupich wrote in a letter to priests.

The letter came after President Donald Trump issued tough new guidelines that widen the net for the deportation of illegal immigrants in the US. The guidelines, according to the New York Times, are aimed at "unleashing the full force of the federal government to find, arrest and deport those in the country illegally".