Bank of Canada Governor Tiff Macklem came to the defence of his U.S. counterpart Jerome Powell on Monday as the chair of the Federal Reserve faces a criminal investigation from U.S. President Donald Trump's Justice Department.

Trump's Department of Justice endured two more headaches this week named Lindsey Halligan and John Sarcone III.

President Donald Trump's administration said on Thursday it was creating a new division at the U.S. Department of Justice to combat what the White House called "rampant" fraud across the country.

The Justice Department has a new fraud division and an assistant attorney general that will focus on thwarting fraud anywhere in the United States.

Even for Trump, it’s been quite the week. But this is more than just a series of dizzying news cycles. The White House, after months of struggle, believes that it has found its footing again. Trump, though never restrained, is now pure id, acting on impulse and goaded on by advisers who see an opportunity to further expand executive power.

U.S. President Donald Trump said Sunday that Iran proposed negotiations after his threat to strike the Islamic Republic over its bloody crackdown targeting demonstrators there, a move coming as activists said the death toll in protests rose to at least 544.

"The Department of Justice served the Federal Reserve with grand jury subpoenas," Federal Reserve Chair Jerome Powell said on Jan. 11.