Comey's comments came during a lengthy interview in Dublin, the Irish Times reported.
"I am ashamed of the way my country has acted with respect of those children".
"My wife and I were joking, not really joking; we wanted to tell the people on the customs line coming here that we were Canadian". He told Nick Ferrari the truth of his relationship with the President of the US.
Mr Comey was extremely critical of the separation of immigrant children from their parents on the U.S. border, but believes it may have led to the tide turning on the public's perception of Trump.
"When you stare at children crying, being taken away from their mothers, it forces your eyes above statutes and numbers to [consider]: What kind of people are we, for God sakes?"
Trump threatens 20pc tariff on all imported European Union cars
German automakers face broader threats from Trump's shift away from decades of US policy supporting open trade. Trump responded to the news about the new tariffs the way he usually responds to world events, with a Tweet .
A new report from Department of Justice Inspector General Michael Horowitz found Comey "deviated" from FBI protocol in his handling of the investigation into former Secretary of State Hillary Clinton's use of a private email server during her tenure at the federal agency.
Clinton was in Dublin on Friday to accept an honorary degree from Trinity College for her "contribution to society".
Former FBI director James Comey has accused President Donald Trump of never laughing and constantly talking about himself in a damning interview on United Kingdom radio. He told The Guardian that the president "is doing - and will do - great damage to my country". Democratic institutions are "really hard to change", he said in Dublin.
He said he does not support the legalization of cannabis, but he does back "experimentation" with laws. No president serves long enough to screw that up.
Sen. Lindsey Graham on Thursday questioned the Justice Department's inspector general about an August 2016 meeting in which then-agent Peter Strzok mentioned the Russian Federation probe as "an insurance policy" against Republican Donald Trump's election that November.
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